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Floppy disk drive for the Apple II computer
The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5 +1⁄4-inch floppy disk drive designed by Steve Wozniak at the recommendation of Mike
Disk_II
1977–1993 series of microcomputers
instead of Integer BASIC. The Apple II series eventually supported over 1,500 software programs. When the Disk II floppy disk drive was released in 1978, a
Apple_II
First model in the Apple II computer series
the company introduced an external 5+1⁄4-inch floppy disk drive, called Disk II (stylized as Disk ][), attached through a controller card that plugs into
Apple_II_(original)
Removable disk storage medium
A floppy disk, diskette, or floppy diskette is a type of disk storage made from a thin, flexible disk coated with a magnetic storage medium. It is enclosed
Floppy_disk
A floppy disk is a disk storage medium composed of a thin and flexible magnetic storage medium encased in a rectangular plastic carrier. It is read and
History_of_the_floppy_disk
1991 video game
the Battle Isle series. Two official expansion packs were released: Data Disk I in 1992 and The Moon of Chromos in 1993. An unofficial expansion, Battle
Battle_Isle_(video_game)
Apple II systems were the Disk II Controller Card, which allowed users of earlier Apple IIs to use the Apple Disk II, a 5¼ inch, 140 kB floppy disk drive;
Apple_II_peripheral_cards
Floppy drive by Apple
FileWare floppy disk drives and diskettes were designed by Apple Computer as a higher-performance alternative to the Disk II and Disk III floppy systems
Apple_FileWare
Second model of the Apple II computer line
was limited to using the Apple II's GCR disk format and thus CP/M software either had to be obtained on Apple format disks or transferred via serial link
Apple_II_Plus
External floppy disk drive by Apple
Macintosh and Apple II product lines, dropping the name "Macintosh" from the drives. Though Apple had been producing external floppy disk drives prior to
Macintosh_External_Disk_Drive
Inscribed clay disc found in Crete, Greece
symbols instead of Phaistos Disc glyphs. The Phaistos Disc, or Phaistos Disk, is a disc of fired clay from the island of Crete, Greece, possibly from
Phaistos_Disc
Single-chip version of the floppy disk controller for the Apple II
the floppy disk controller for the Apple II. It was also employed in Macintosh computers. When developing a floppy drive for the Apple II, Apple Inc.
Integrated_Woz_Machine
Third model in the Apple II series of personal computers
an actual Apple 5.25, Apple UniDisk 3.5 and Apple II joystick or paddles. The Apple IIe Card is thought of as an Apple II compatibility solution or emulator
Apple_IIe
Series of microcomputers produced in France in the early 1980s
character text. It has an built-in cassette recorder and an optional disk drive (DISK II). At launch there were sixty software titles available on tape. It
Hector_(microcomputer)
First model of the second generation of the Apple Macintosh computer line
black-and-white CRT. The Macintosh II has drive bays for an internal hard disk (originally 40 MB or 80 MB) and an optional second floppy disk drive. Along with the
Macintosh_II
Second model of Apple's Macintosh computer line
800 KB floppy disk drive as well as the Hard Disk 20, the first Macintosh hard disk from Apple, attaching to the floppy disk port. The Hard Disk 20 required
Macintosh_512K
First model of Apple's Macintosh computer line
floppy disk drive, with no option to add any further internal storage, like a hard drive or additional floppy disk drive. The system software was disk-based
Macintosh_128K
American digital storage corporation
Sandisk Corporation (formerly SunDisk Corporation and SanDisk Corporation) is an American multinational computer semiconductor company based in Milpitas
Sandisk
1989 video game by Distinctive Software
Duel: Test Drive II at MobyGames The Supercars car disk at MobyGames Musclecars car disk at MobyGames California Challenge scenery disk at MobyGames European
The_Duel:_Test_Drive_II
Third model of Apple's Macintosh computer line
replacement for the slow Hard Disk 20. It would be well over a year before Apple would offer the first internal hard disk drive in any Macintosh. A compact
Macintosh_Plus
1980 business-oriented personal computer
floppy disk drive. Graphics modes include 560x192 in black and white, and 280x192 with 16 colors or shades of gray. Unlike the Apple II, the Disk III controller
Apple_III
Personal computer by Apple Inc.
its lack of third-party software, unreliable FileWare ("Twiggy") floppy disks, and its high, workstation-level price. The Lisa's CPU and storage performance
Apple_Lisa
Fourth model of Apple's Macintosh computer line
and kerning routines in the Toolbox ROM Disk First Aid is included on the system disk The SE and Macintosh II were the first Apple computers since the
Macintosh_SE
Hard drive by Apple
The Apple Hard Disk 20SC is Apple's first SCSI based hard drive for the Apple II family as well as the Macintosh and other third party computers using
Hard_Disk_20SC
1986 personal computer
25-inch and 3.5-inch floppy disks and has seven general-purpose expansion slots compatible with those on the Apple II, II+, and IIe. It also has a memory
Apple_IIGS
Modified version of the Apple Lisa
added support for an 800 KB 3.5" floppy disk and System software up through version 6.0.3. MacWorks Plus II extended that to the same System 7.5.5 limit
Macintosh_XL
circumstellar disks that have published resolved images. Many of them are protoplanetary disks or debris disks. Only some are transitional disks between protoplanetary
List of resolved circumstellar disks
List_of_resolved_circumstellar_disks
Industrial design language
IIGS (1986)[a] Apple 3.5 Drive (1986) Hard Disk 20SC (1986)[d] Macintosh SE series (1987)[a] Macintosh II (1987)[a] ImageWriter LQ (1987) Apple PC 5.25
Snow_White_design_language
Line of subnotebooks manufactured and sold by Apple Computer
configuration with 8 MB of RAM and a 750 MB hard disk, or US$4,700 for 20 MB of RAM and a 1.1 GB hard disk. The 200–series Duos were powered by either Motorola
PowerBook_Duo
Line of PowerPC-based computers
possibly the CD-ROM. UW-SCSI hard disks are seldom an issue and Apple even released an U-SCSI (but narrow) hard disk installation kit for the ANS even
Apple_Network_Server
Disk II made the Apple II very popular in small businesses, which asked the company for 80-column support, but Apple delayed improving the Apple II because
Apple_80-Column_Text_Card
Personal computer by Apple
MB upper limit and was supplied with either a 40 or 80 MB hard disk. While the Classic II was styled after the earlier Classic, architecturally it had more
Macintosh_Classic_II
Creation of accessible areas on secondary storage device
Disk partitioning or disk slicing is the creation of one or more regions on secondary storage, so that each region can be managed separately. These regions
Disk_partitioning
Personal computer by Apple Computer
(1.2 million sold). Basilisk II, emulator with limited support Mini vMac, emulator capable of booting from the ROM disk List of Mac models grouped by
Macintosh_Classic
First Macintosh hard drive developed by Apple
The Macintosh Hard Disk 20 is the first hard disk drive developed by Apple Computer specifically for use with the Macintosh 512K. Introduced on September
Hard_Disk_20
'Commodore 64 disk/tape emulation and data transfer' comprises hardware and software for Commodore 64 disk & tape emulation and for data transfer between
Commodore 64 disk and tape emulation
Commodore_64_disk_and_tape_emulation
copy 319 Apple II or Commodore 64 disks, 283 Atari disks, 158 single-sided IBM PC or Atari Enhanced disks, 158 Kaypro or TRS-80 disks, or 86 double-sided
ALF_Products
common generations of floppy disks (and drives), many other floppy disk formats were developed, either using a different disk design or special layout and
Floppy_disk_variants
Defunct computer technology company
producing the first hard disk drives, data backup, and networking devices, commonly for the Apple II. The combination of disk storage, backup, and networking
Corvus_Systems
Disk drive for the Atari 8-bit computers
expensive than the Disk II, listed at $599 when it was introduced in 1979. It also had the disadvantage of running slower than the Disk II; although the underlying
Atari_810
Original Apple Macintosh personal computer form-factor with a built-in screen
Macintosh 128K first sold in 1984. Compact Macs run through to the Color Classic II sold until 1995. Notes 220 V international models are appended with the letter
Compact_Macintosh
Electro-mechanical data storage device
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical computer data storage device that stores and retrieves digital data
Hard_disk_drive
Personal computer by Apple
(a new entry-level machine for the Macintosh II series), and offered for half the price of the Macintosh II but significantly lesser in performance overall
Macintosh_LC
Fourth model Apple II computer model
slots so software from the slot-based Apple II can use them without modification. The entire Apple Disk II Card, used for controlling floppy drives, is
Apple_IIc
Early Apple employee
contribution was the RWTS (read/write track-sector) routines for the Disk II, the 51⁄4" floppy disk controller introduced at the Consumer Electronics Show (CES)
Randy_Wigginton
Video game console peripheral
The Family Computer Disk System, commonly shortened to the Famicom Disk System, is a peripheral for Nintendo's Family Computer (Famicom) home video game
Famicom_Disk_System
Second generation of the Apple Macintosh computer line
Macintosh II is a family of personal computers that was designed, manufactured and sold by Apple Computer, Inc. from 1987 to 1993. The Macintosh II was the
Macintosh_II_family
Astronomical phenomenon
occurs when a planet or other body in orbit around a star interacts with a disk of gas or planetesimals, resulting in the alteration of its orbital parameters
Planetary_migration
Computer model built by Apple
discontinued on September 30, 1977, following the introduction of the Apple II. Because relatively few Apple-1 computers were produced and its status as
Apple_I
American businessman (born 1942)
the unsuccessful Apple III. Wozniak was motivated to design the Disk II floppy disk drive system after Markkula found that a checkbook-balancing program
Mike_Markkula
CPU type List of iPhone models List of iPad models Timeline of the Apple II family List of Mac models The SuperDrive was last stocked in August 2024 but
List_of_Apple_products
Personal computer by Apple, Inc
slot. It shipped with either a 40 MB or 80 MB internal hard disk, and a 1.44 MB floppy disk drive. The Motorola 68882 FPU was an optional upgrade, mounted
Macintosh_IIsi
Apple's effort to bring Macintosh computers into business environments
Macintosh II. In January 1987, Apple finally introduced its file sharing application AppleShare. Together with a faster SCSI hard drive, the Hard Disk 20SC
Macintosh_Office
its later, expanded version Contiki - 8-bit text web browser Copy II+ - copy and disk utilities Crossword Magic - Given clues and answers, software automatically
List of Apple II application software
List_of_Apple_II_application_software
Gas and dust surrounding a newly formed star
Ae/Be star. The protoplanetary disk may not be considered an accretion disk; while the two are similar, an accretion disk is hotter and spins much faster
Protoplanetary_disk
Apple II disk operating system
support for 5.25" floppy disks and requires patches to use peripheral devices such as hard disk drives and non-Disk-II floppy disk drives, including 3.5"
Apple_ProDOS
Personal computer released by Apple Computer
was also the first compact Mac to include a 1.44 MB high density floppy disk drive as standard (late versions of the SE had one, but earlier versions
Macintosh_SE/30
Limited-edition Apple computer
of a 2 GB 2.5-inch ATA hard disk drive, a vertically mounted 4× CD-ROM drive, and a 1.44 MB Apple SuperDrive floppy disk drive. Multimedia hardware included
Twentieth Anniversary Macintosh
Twentieth_Anniversary_Macintosh
Personal computer by Apple, Inc
the 800K disk drive and 128K of ROM used in the Macintosh Plus. The new ROM supported HFS used on 800K and larger disks and allowed the Hard Disk 20 to be
Macintosh_512Ke
Operating system focused on disk-based file operations
A disk operating system (DOS) is a computer operating system that requires a hard disk (HDD), floppy disk, solid-state drive (SSD), or other direct-access
Disk_operating_system
Class of microcomputers
recorders, joysticks, and (later) disk drives were either built-in or available on expansion cards. Although the Apple II had internal expansion slots, most
Home_computer
Keyboard by Apple Inc.
separately alongside the Macintosh II and SE starting in 1987. It was replaced in 1990 by the Apple Extended Keyboard II (AEKII, model M3501) which was pre-packaged
Apple_Extended_Keyboard
Monochrome computer monitor
The Apple Monitor II is a CRT-based green monochrome 12-inch monitor manufactured by Sanyo for Apple Computer; for the Apple II. Apple introduced the
Apple_Monitor_II
Personal computer by Apple
6502 CPUs, which is the same CPU family used in Apple II machines. The IIfx uses SCSI as its hard disk interface, as had all previous Macintosh models since
Macintosh_IIfx
Computer timeline
This timeline of Apple II family models lists all models Apple II computers produced by Apple Computer in order of introduction date. The Apple I and Apple
Timeline of the Apple II series
Timeline_of_the_Apple_II_series
Personal computer by Apple Computer
speed. Hard disk: The 5500 includes a larger ATA hard disk than its predecessor. The computer came stock with a 2 gigabyte (GB) hard disk, but the 275 MHz
Power_Macintosh_5500
introduction. Disk II Disk III Apple "Twiggy" FileWare Disk IIc 400K Drive (internal) Macintosh External Disk Drive (400K) UniDisk DuoDisk UniDisk 3.5 Macintosh
List_of_Apple_drives
American engineer and programmer (born 1950)
world. Wozniak also designed the Disk II floppy disk drive, released in 1978 specifically for use with the Apple II to replace the slower cassette tape
Steve_Wozniak
Family of disk operating systems
Apple DOS is the disk operating system for the Apple II computers from late 1978 through early 1983. It was superseded by ProDOS in 1983. Apple DOS has
Apple_DOS
First battery-powered portable Macintosh by Apple
permitting use in most countries. By configuring a RAM disk and moving system files onto it to minimise hard disk access, Apple claimed users could achieve up to
Macintosh_Portable
Floppy disk drive for the Commodore 64
disk operating system is CBM DOS 2.6. The 1541 was priced at under US$400 at its introduction. A C64 with a 1541 cost about $900, while an Apple II with
Commodore_1541
Compatibility card
hard disk all function as Apple II devices. With the included Y-cable, Apple II specific peripherals can be used as well: The Apple 5.25, Apple UniDisk 3
Apple_IIe_Card
1979 computer spreadsheet application
an Apple II with 32K of random-access memory (RAM), and supports saving files to magnetic tape cassette or to the Apple Disk II floppy disk system. Many
VisiCalc
Hard disk drive
The ProFile (codenamed Pippin) is the first hard disk drive produced by Apple Computer, initially for use with the Apple III. The original model had a
Apple_ProFile
Series of personal computers by Apple
per bus (normally one optical drive and one hard disk). Additionally, they came with onboard ATI Rage II+ video. G3s with Revision B ROMs support slave
Power_Macintosh_G3
interface), winprinters (named after winmodems) or softprinters. The Apple II Disk II floppy drive used the host CPU to process drive control signals, instead
Host_signal_processing
Computer pointing devices made by Apple
on March 1, 2003. Retrieved October 28, 2025. Apple II: Joystick II Operations Manual (for II, II+). Cupertino, California: Apple Computer. 1981. Apple
Apple_pointing_devices
magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive
History of IBM magnetic disk drives
History_of_IBM_magnetic_disk_drives
Personal computer released by Apple Computer, Inc
with a video memory upgrade. A slightly updated model, the Color Classic II, featuring the Macintosh LC 550 logic board with a 33 MHz 68030 processor
Macintosh_Color_Classic
Family of personal computers made by Apple
due to the machine's low performance, its single floppy disk drive, which required frequent disk swapping, and its initial lack of applications. Author
Mac_(computer)
Operating system
as the Zilog Floppy Disk File System (ZDOS), and the Zilog Hard Disk File System (DFS). It also provides access to a number of disk-resident software such
Z80-RIO
Microcomputer virus
which it was written. It attached itself to the Apple II operating system and spread by floppy disk. It was written around 1982 by programmer and entrepreneur
Elk_Cloner
The Family Computer Disk System (Famicom Disk System) add-on for the Family Computer has a library of 194 officially licensed games during its initial
List of Famicom Disk System games
List_of_Famicom_Disk_System_games
Structure formed by diffuse material in orbital motion around a massive central body
An accretion disk is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body. The central
Accretion_disk
Line of laptop computers by Apple Computer
SuperDrive, a Zip 100 drive, a Zip 250 drive, an LS-120 SuperDisk drive, a VST floppy disk drive, a second hard drive (with adapter, which was tough to
PowerBook_G3
Triple star system in the constellation Piscis Austrinus
Thébault, P. (2012). "An interferometric study of the Fomalhaut inner debris disk II. Keck Nuller mid-infrared observations". Astrophysical Journal. 763 (2):
Fomalhaut
Mini-cartridge tape drive by Apple
directly to Macintosh Plus, Macintosh SE or Macintosh II via a 50-pin SCSI port or to a compatible hard disk drive. Volume backup time: Approximately 17–18 minutes
Apple_Tape_Backup_40SC
interface called the Disk II. The Disk II system was designed by Wozniak and released with a retail price of $495. In 1979, the Apple II was chosen to be
History_of_Apple_Inc.
Laptop by Apple
enclosure. To further reduce its size and weight, it omitted an internal floppy disk drive in favor of an external drive. Like the other original PowerBook models
PowerBook_100
Encoding methods for representing data on magnetic media
formatted) per diskette. For the Apple II floppy drive, Steve Wozniak invented a floppy controller which (along with the Disk II drive itself) imposed two constraints:
Group_coded_recording
This is a list of different floppy disk formats. Throughout the 1970s and 1980s, many different logical disk formats were used, depending on the hardware
List_of_floppy_disk_formats
Early digital synthesizer
Direct-to-Disk Synclavier Post Pro: consists of Direct-to-Disk Synclavier Post Pro SD (Sound Design): consists of a small Synclavier and Direct-to-Disk Fostex
Synclavier
Color plotter printer by Apple
either water- or oil-based inks. The printer could be connected to an Apple II (with an installed Super Serial Card) or Apple III computer. eagle.def entry
Apple_410_Color_Plotter
Personal computer by Apple, Inc.
floppy drive connectors, the LC II has one. About 5% of the LC units sold had two floppy drives, and internal hard disks were becoming common by 1992, so
Macintosh_LC_II
Cipher system attributed to Thomas Jefferson
The Jefferson disk, also called the Bazeries cylinder or wheel cypher, is a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels
Jefferson_disk
Circuitry that controls reading from and writing to a computer's floppy disk drive
A floppy disk controller (FDC) is a hardware component that directs and controls reading from and writing to a computer's floppy disk drive (FDD). It has
Floppy_disk_controller
Storage density for magnetic disks
Disk density is a capacity designation on magnetic storage, usually floppy disks. Each designation describes a set of characteristics that can affect the
Disk_density
descending "hook" design of the normal typeface, and (with the exception of the Disk II 5.25 drive) the dot over the i is removed. According to the logo designer
Typography_of_Apple_Inc.
Home computer by Coleco, released in 1983
the slower cassettes and the faster but more expensive floppy disk systems like the Disk II at around 13 to 15 kbytes per second. Although the tapes themselves
Coleco_Adam
Line of CD-ROM drives by Apple Computer
they removed it because it was unneeded and attracted dust onto the optical disk head which could cause problems. It uses a front-loading caddy 1x CD-ROM
AppleCD
travel, tourism, insurance
DISK II
DISK II
DISK II
DISK II
DISK II
DISK II
DISK II
DISK II
DISK II
travel, tourism, insurance