Английская Википедия:HP 9845C
The HP 9845C from Hewlett Packard was one of the first desktop computers to be equipped with a color display and light pen for design and illustration work. It was used to create the color war room graphics in the 1983 movie WarGames.[1][2]
Features
The attached HP 98770A color display enabled the color graphics with its own CPU and separate power supply, a vector generator based on the AMD2900 bit-slice architecture, graphics memory with three planes of Шаблон:Nowrap each, the connection interface to the mainframe consists of a direct data bus attachment, and a light-pen logic.[3] Шаблон:Nowrap were available.[3]
The system is a big-endian 16-bit architecture, the BPC, with roots in the HP 2116A which were one of the first 16-bit microprocessors created.[4]
The display showed 8 soft keys on the lower end of the screen, 39 alignment controllers behind a door enabled fine tuning of color convergence.[3]
The speed of the builtin BASIC language was accomplished by implementing time critical parts of it in CPU microcode.[3]
A builtin tape cartridge device with a capacity of 217 kB and transfer speed of 1440 bytes/s enabled storage of data.[3] Average access time for the unit is 6s and a rewind end to end takes 20s. The directory is stored in r/w memory to enable quick access.[5]
| Option 1xx | Option 2xx | |
|---|---|---|
| For/Next | ~95 | ~145 |
| Matrix Plot | ~200 | ~240 |
| Absolute Plot | ~5 000 | ~5 000 |
| Circles/s not clipped | ~2 | ~5 |
See also
- HP 9800 series HP desktop computer product line
- HP DC100 - DC100 tape format and drive
- LDS-1 (Line Drawing System-1)
References
External links
- hpmuseum.net: HP Computer Museum, 98x5 Computers Selection
- archive.org/bohemiae.com: HP 9845B - Summary
- uni-stuttgart.de: 9845B/C CE Handbook (.pdf 2009-08-17)
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite web
- ↑ 3,0 3,1 3,2 3,3 3,4 Ошибка цитирования Неверный тег
<ref>; для сносокhpnetне указан текст - ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
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