用戶:JuneAugust/Kenbak-1

Kenbak-1
計算機歷史博物館中收藏的一台Kenbak-1
研發商約翰·布蘭肯貝克(英語:John V. Blankenbaker
製造商Kenbak Corporation
類型個人電腦
單價750 US$ (現今 $5642.56)
後繼機種H5050

Kenbak-1是被計算機歷史博物館美國計算機博物館英語American Computer Museum認定為世界上首台「個人電腦[1] Only 40 machines were ever built and sold. It was designed and invented by John Blankenbaker of Kenbak Corporation in 1970, and was first sold in early 1971. The system first sold for US$750.[2] Only around 10 machines are now known to exist worldwide, with various collectors. In 1973, production of the Kenbak-1 stopped[3] as Kenbak failed and was taken over by CTI Education Products, Inc. CTI rebranded the inventory and renamed it the H5050, though sales remained elusive.[4]

由於 Kenbak-1是在第一枚微處理器發明之前誕生的,所以這台機器沒有單晶片CPU,而是完全基於小規模集成TTL晶片[5]。The 8-bit machine offered 256 bytes of memory.[6] The instruction cycle time was 1 microsecond (equivalent to an instruction clock speed of 1 MHz), but actual execution speed averaged below 1000 instructions per second due to architectural constraints such as slow access to serial memory.[5]

To use the machine, one had to program it with a series of buttons and switches, using pure machine code. Output consisted of a series of lights.

另見

  • Datapoint 2200, a contemporary machine with alphanumeric screen and keyboard, suitable to run non-trivial application programs.

技術資料及文件

參考

  1. ^ Timeline of Computer History. Computer History Museum. [July 22, 2008]. 
  2. ^ Kenbak-1 The Training Computer. Computerworld. November 17, 1971: 43 [May 25, 2014]. 
  3. ^ p. 52, "The First Personal Computer", Popular Mechanics, January 2000.
  4. ^ Robert R Nielsen, Snr. Inside the Kenbak-1. [8 November 2015]. 
  5. ^ 5.0 5.1 Erik Klein. Kenbak Computer Company Kenbak-1. Old-computers.com. [May 25, 2014]. 
  6. ^ Bill Wilson. The man who made 'the world's first personal computer'. BBC News. 6 November 2015. 

外部連結