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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 17:26:43 +02:00

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title, categories, types, origins, years, cpus, params
title categories types origins years cpus params
APPLE III
Computers
Professional Computer
U.S.A.
1980
MOS 6502A
name image company company_name specs tabs forum_thread photos adverts hardware links oc_id source
APPLE III /media/museum/photos/apple_iii_system_s3.jpg /companies/apple Apple
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NAME APPLE III
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MANUFACTURER Apple
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TYPE Professional Computer
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ORIGIN U.S.A.
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YEAR May 1980
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BUILT IN LANGUAGE Business BASIC
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KEYBOARD Full stroke 74-key with numeric keypad
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CPU MOS 6502A
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SPEED 2 MHz
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RAM 128 KB (up to 512 KB)
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ROM 16 KB
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TEXT MODES 40 or 80 chars x 24 lines
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GRAPHIC MODES 40 x 40-48 (16 col), 280 x 160-192 (6 col), 560 x 160-192 (2 col)
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COLORS 16 maximum
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SOUND one channel 7 octaves
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SIZE / WEIGHT 44.4 (W) x 46.2 (D) x 12.2 (H) cm
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I/O PORTS Monitor, Internal Slots (4), RS-232, Floppy disk port
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BUILT IN MEDIA One built in 140 KB 5.25'' disk-drive
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OS SOS
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POWER SUPPLY Built-in power supply unit
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PERIPHERALS 4 expansion slots,5 MB Profile hard disk unit, dual floppy disc unit, coulour video card, provision for extra memory
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PRICE £1995 (U.K., 1983)
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LARGER VIEW /media/museum/photos/apple_iii_system_s2.jpg
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RUNNING SYSTEM Loading the Apple Business Basic. /media/museum/photos/apple_iii_running_s1.jpg
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MAIN UNIT /media/museum/photos/apple_iii_mainunit_s1.jpg
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KEYBOARD Each country had a specific version of the keyboard including the local characters. /media/museum/photos/apple_iii_keyboard_s2.jpg
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KEYBOARD CLOSE-UP /media/museum/photos/apple_iii_keyboard_s1.jpg
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COMPLETE SYSTEM #1 Apple /// with Apple Profile 10 MB hard disk unit and external floppy disk unit. /media/museum/photos/apple_iii_withprofile_s1.jpg
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COMPLETE SYSTEM #2 Imposing! /media/museum/photos/apple_iii_withprofile_s2.jpg
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METAL FRAME The heavy metal frame wasn't really practical. Moreover, it was responsible for the Apple III’s reliability problems. It was more of a marketing idea than a real need. The professional Apple III had to appear heavier and more robust than the standard Apple II. /media/museum/photos/apple_iii_metalframe_s1.jpg
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OPENED The motherboard and Power supply unit are located beneath the metal frame.\ The Universal Parallel I/O card is inserted in a slot. /media/museum/photos/apple_iii_opened_s1.jpg
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REAR SIDE From left to right:\ • External floppy disk(s) connector\ • 2 joystick ports\ • Color RGB video output\ • Monochrome composite video output\ • Sound output\ • Serial RS232 port\ • Mains supply socket and switch /media/museum/photos/apple_iii_rearside_s1.jpg
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MAINBOARD The mainboard is a simple evolution of the Apple II's with a daughter RAM card.\ **(1)** 6502B microprocessor\ **(2)** 2 6522 VIA (Versatile Interface Adapter)\ **(3)** 128 KB RAM card\ **(4)** System ROM chips\ **(5)** Keyboard interface by General Instrument\ **(6)** Four expansion slots compatible with Apple II cards\ **(7)** Keyboard connector\ **(8)** Internal floppy disk connector, connected in parallel with the external connector. Up to 4 FDDs could be connected. /media/museum/photos/apple_iii_mainboard_s1.jpg
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RAM CHIPS Notice the strange Mostek 4332 RAM chips; The 'D' package consisted of two MK4116s mounted onto the same chip. The RAM capacity was thus of 32K x 1 bit. /media/museum/photos/apple_iii_ramchips_s1.jpg
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THE BOX /media/museum/photos/apple_iii_box.jpg
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THE BAG /media/museum/photos/apple_iii_bag.jpg
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APPLE III IN TRON FILM Screenshot from the film TRON (1982, by Steven Lisberger), where one finds an Apple ///, a modem/acoustic coupler, a Silentype printer and a 5.25 (Apple II) floppy drive unit. /media/museum/photos/apple_iii_tronfilm.jpg
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PAINTED VERSION! /media/museum/photos/apple_appleiii_custom.jpg
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PROMOTIONAL PICTURE /media/museum/photos/apple_apple3_prm-pic.jpg
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ADVERT Picture courtesy of [Steve Browning, www.sbrowning.com/vintage](http://www.sbrowning.com/vintage). /media/museum/pubs/apple_pub_1.jpg
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APPLE II & III From 'Personal Computing', May 1981. Courtesy of '[Attached](http://www.aci.com.pl/mwichary/)' /media/museum/pubs/apple_iii_pub_s3.jpg
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U.S. ADVERT (1982) Bottoms-up tour: - Apple III\ - Daisy-chain of three F.D. units\ - 5 MB Profile hard-disc unit\ - Apple III monochrome monitor\ - Apple Silentype Personal Printer\ - 132 columns Apple Writer III\ - Apple Color Plotter\ - 9600 bauds Apple Phone Modem /media/museum/pubs/apple_iii_pub_2.jpg
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US ADVERT MARCH 1982 From Personal Computing, March 1982 issue. Courtesy of **[Attached](http://www.aci.com.pl/mwichary/)** /media/museum/pubs/apple_iii_pubus0382_s1.jpg
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US ADVERT, AUGUST 1983 From Personal Computing, August 1983 issue. Courtesy of **[Attached](http://www.aci.com.pl/mwichary/)** /media/museum/pubs/apple_iii_pubus0883_s1.jpg
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APPLE BUSINESS GRAPHICS The Apple graphics package was launched in September 1982. It was available for both the Apple II and Apple III. Advert said: As you know, one picture is worth a few thousand numbers.\ As you may not know, Apple Business Graphics software can generate more types of pictures, in more colours, using more data than any other graphics package... On the monitor of your choice. And on virtually any printer or plotter on the market... /media/museum/pubs/apple_ii_businessgraph_1.jpg
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FRENCH ADVERT (FEBRUARY 1982) /media/museum/pubs/apple_pub-graphie_1.jpg
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FRENCH ADVERT (FEBRUARY 1982) "the power of words depends on the way you use them" /media/museum/pubs/apple_iii_pub_puissance-des-mots.jpg
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DISK 2 External FD unit Up to three Disk 2 units can be connected in chain. /media/museum/hardware/apple_iii_fdunit_s1.jpg
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PROFILE Hard disk unit This version contains a 10 MB Seagate hard drive but first versions only offered 5 MB of capacity. /media/museum/hardware/apple_iii_profilehd_s1.jpg
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INSIDE THE PROFILE UNIT A Zilog Z8 microcontroller (nothing to do with the Z80 CPU) topped by its ROM chip manages the controller card. /media/museum/hardware/apple_iii_insideprofile_s1.jpg
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Applefritter http://www.applefritter.com Excellent site about all Apple models,clones,prototypes,etc... A must see !
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Web Wiz CAPTCHA http://www.webwizcaptcha.com All about Apple II user groups
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https://web.archive.org/web/20230426111455/http://www.old-computers.com/museum/computer.asp?c=72 2023-04-26

The Apple /// was designed to be a business machine. It was partly compatible with the Apple II (thanks to a few options in the operating system). It used a powerful memory management system and worked under SOS (Sophisticated Operating System) which was a great, device -independent, operating system. This OS was the "ancestor" of ProDOS (the "professional" Apple operating system) and some parts of this system were used later in the Lisa and Macintosh OSs.

Despite its unique features, the Apple /// had a lot of technical problems, namely, the horrible case design. It caused the internal temperature to get so hot that the motherboard would warp and some of the socketed chips would become unseated. To remedy this, Apple told people to literally pick up the computer several centimeters off the desk and drop it! It was a miserable flop in the marketplace.

The Apple /// was followed in december 1983 by the Apple /// plus which had an Apple IIe style keyboard and a new video interface. Four months later, it was discontinued.