1000BiT Homepage

× 1000BiT Logo

× Logo

2200 Type 1

Datapoint Corp. (Computer Terminal Corporation) (USA)

Previous: 1560 Processor Next: 2200 Type 2
Visits: 43
Name 2200 Type 1 Datapoint Corp. (Computer Terminal Corporation) 
Manufacturer Datapoint Corp. (Computer Terminal Corporation) (USA) Type
Production start (mm-yyyy) 1971 Production end (mm-yyyy) -
RAM 2K-4K-6K-8K RAM (1-4 memory boards, 2K each). ROM
CPU Custom Chip - 1.2 Mhz
Operating System Datapoint CTOS (Cassette Tape Operating System), Datapoint DOS 1.0-1.2, and later ran DOS.A, DOS.B, and/or DOS.C
Text (Cols x Rows) 80 x 12
Graphics None
Sound Beeper
Storage memory Tape 150Kb per side, 350 cps x 2
Serial port RS-232 Parallel port
Others port 50-pin I/O bus
Original price   Currency original price
Units sold
Note The Intel 8008 was originally developed by Intel as a custom chip for Datapoint (Intel didn't believe there really was a significant market for a general-purpose microcomputer-on-a-chip! ... they wanted Datapoint's memory business!), and implements (almost) exactly the Datapoint 2200 instruction set. The reason Intel to this day uses LSB/MSB byte order is because the Type 1 2200 used a serial shift register memory, and that allowed propagating carries from LSB to MSB without requiring the memory recirculate around to the previous byte.

It's also notable that the 2200 (and 5500 and 6600) did not use a raster scan CRT display, but instead Datapoint's patented "diddle scan" technique which permitted (in the earlier machines) using a serial shift register memory for the CRT refresh memory.
Originally Datapoint Corporation was known as Computer Terminal Corporation (CTC), but due to the success of its programmable terminal Datapoint 2200 they change its name. 
User webmaster

If you want to leave a comment, please log in.

At the moment no comments, do you want to write the first?

Are there some errors? Do you have other info? .

× 1000BiT Logo

Leave your comment or tell us something about this computer (2000 char. max.)


Secure Code: