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Texas Instruments CC 40 Compact Computer

Date of introduction:  March, 1983 Display technology:  LCD dot matrix
New price:   Display size:  31 (10 + 3)
Size:  5.7" x 9.3" x 1.0"    
Weight:  1 pound 2 ounces Serial No:  4727751
Batteries:  4*AA Date of manufacture:  wk 25 year 1983
AC-Adapter:  AC9201, AC9201/E Origin of manufacture:  USA (ATA)
Precision:  13 Integrated circuits:  CPU: TMC70C20
 ASIC: AMI 1041036
 ROM: HN61256
 RAM: 3*HM6116LP
Memories:  18kB RAM, 34kB ROM    
Program steps:   Courtesy of:  Anders Persson

With the CC 40 Texas Instruments introduced in the year 1983 a powerful and yet portable computer. Within 3 years the CC 40 was replaced with the TI-74 BASICALC.

The CC 40 uses the 8-bit TMC70C20 microcontroller, the second design of TI after the successful TMS1000 series found in most calculators. The internal ROM of the TMC70C20 is expanded with additional 32k for the BASIC interpreter. The total amount of RAM could vary between the basic 6k or a maximum of 18k.

The pictured CC 40 sports with the TMX70C20 a very early prototyp of the final microcontroller.

The CC 40 uses the HEX-BUS for expansion, different products like printers, plotters and even a serial interface were available:

Type

Function

Value
SS-1000 Memory Expansion 16k RAM
SS-2000 Memory Expansion with Li-Backup Battery 8k RAM
HX-1000 Plotter 4 colours  
HX-1010 Printer (Thermal ribbon)  
HX-3000 RS-232 Interface  
HX-3100 Modem  
HX-3200 Centronics Printer Interface  
SS-1001 Pascal module  
SS-3004 Memo Processor module  
SS-3006 Finance module  
SS-3007 Electrical Engineering module  
SS-3008 Statistics module  
SS-3009 Mathematics module  
SS-3024 Games module  

CC-40_PCB.jpg (251653 Byte)A detailed picture of the internal printed circuit board (PCB) could be found here. Compare it with the PCB of the later TI-74.


If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, December 5, 2001. No reprints without written permission.