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Texas Instruments TI-74 BASICALC

Date of introduction:  1986 Display technology:  LCD dot matrix
New price:  DM 348.00 Display size:  31 (10 + 3)
Size:  3.7" x 8.0" x 1.0"    
Weight:  11 ounces Serial No:  0004996
Batteries:  4*AAA Date of manufacture:  mth 04 year 1986
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:  13 Integrated circuits:  TMC70009, HN61256, HM6264
Memories:  8kB RAM, 32kB ROM    
Program steps:   Courtesy of:  Joerg Woerner

The TI-74 BASICALC is a mixture of the earlier CC 40 Compact Computer and a conventional calculator.  You have both a BASIC-language computer with a total of 8 kByte memory and a calculator mode with algebraical input and immediate output on the huge alphanumerical display. The other features of the TI-74 are similar to its sibbling TI-95 PROCALC. You may install RAM or ROM-cartridges in the expansion port or connect the PC-324 printer to the computer. The maximum capacity of the TI-74 BASICALC is 16 kByte of memory. 

The TI-74 BASICALC System uses the following components:

PC-324 24-column thermal printer
AC9201 Mains adaptor for PC-324
TP-324 Thermal paper for PC-324
CI-7 Cassette interface
CM-8 8k Constant Memory Module (RAM)
Mathematics Library (ROM)
Statistics Library (ROM)
Learn Pascal Library (ROM)
Finance Library (ROM)
Chemical Engineering Library (ROM)

 
TI-74_PCB.jpg (146154 Byte)A detailed picture of the internal printed circuit board (PCB) could be found here. Compare it with the PCB of the earlier CC 40.

A special OEM-version of the TI-74 was sold as TI-74S.

 


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

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