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Atari 520 ST

Atari 520 ST

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1976, Warner Communications buys Atari from Nolan Bushnell for $28 million. In december 1978, Atari announces the Atari 400 and 800 personal computers, using the 6502 microprocessor.  In october 1979, Atari begins shipping the Atari 400 and Atari 800 personal computers. In december of the same year, Sears begins selling Atari home computers. These computers used cartridges for software media and also had a cassette program recorder to save the program you created using the basic computing language cartridge. In may 1981, Atari announces the 8KB Atari 400 is being discontinued.
ATARI 520 ST

Atari SF 354 floppy drive (left)
floppy drive sn; A16B 5049816
3.5" 720Kb DD(360Kb on older models)

1985 Atari Corp. releases the first Atari ST home computer, the 520ST. The 16Bit Home Computer era begins. (MC68000) 
When the ST series was introduced in 1985, it was widely reported that,  it would either make or break Atari. 
From the start, the machine itself was controversial as it was not compatible with either IBM or Apple. 'Power Without the Price' is the memorable sales slogan which accompanied the release of the ST series. 
Jack Tramiel decided to make things easy for potential customers by incorporating a version of Gem into the machine, and the Atari ST as we know it was born. 
Made in Taiwan. 
  • SN=A173J1049768
  • 512 K RAM
  • ROM; 192Kb, 128Kb Cartridge Port
  • 8MHz MOTOROLA 68000 CPU
  • Sound; Yamaha 3 Voice PSG
  • Graphics; 
    • 320*200*16 (ST-Low)
    • 640*200*4 (ST-Medium)
    • 640*400*2 (ST-High)
    • 512 Colour Palette
  • Ports;
    • Mouse/Joystick Port
    • Joystick Port
    • Serial Port
    • Printer Port
    • Monitor Port
    • TV Port
    • Cartridge Port
    • MIDI In/Out
    • Hard disk
The back of the 520-ST