|Introductory price||39 500 USD (today $111911.35)|
|Discontinued||1984 (being out competed by the 200 series)|
|Power||Mainframe: 275 W (max), CRT display: 550 W (max)|
Standard option 1xx:
|Memory||64 - 1600 kB RAM ; 128 kB ROM|
|Graphics||560 x 455 pixels @ 3 bpp|
The HP 9845C was one of the first desktop computers in 1980 equipped with colour screen and light pen for design and illustration work. It was used to create the colour war room graphics in the 1983 movie WarGames.
The attached HP 98770A color display enabled the colour 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 32 kB each, the connection interface to the mainframe consists of a direct data bus attachment, and a light-pen logic. 4913 colors were available.
A builtin tape cartridge device with a capacity of 217 kB and transfer speed of 1440 bytes/s enabled storage of data. 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.
|Option 1xx||Option 2xx|
|Absolute Plot||~5 000||~5 000|
|Circles/s not clipped||~2||~5|
LPU means "Language Processor Unit".
- 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)