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Additional Pictures 

 

The  PCB  of the Texas Instruments TI-88 "PVT 2 (Production Validation Test 1) Build", manufactured  in August 1982  is centered
around two 4-bit microcontroller, two RAM and one ROM chip, each.

Close-up view of the Main Integrated Circuits of  the TI-88 "PVT 2 Build" with Serial Number 0001101.

The rechargeable battery pack of the TI-88 with just one AA-sized NiCd battery in a small plastic housing.

The Constant Memory or CRAM-Module as user programmable memory with  either 1,184 program steps or 148 user memories.

The 11 contacts of the Constant Memory or CRAM-Module with Power Supply,
4 Data I/O-lines, 2 Chip Select signals, Clock and Serial I/O.

The CROM-Module as pre-programmed software like the earlier TI-58C/TI-59  Solid State Software™ modules with up to 15,000 program steps.

 

The 11 contacts of the Solid State Software or CROM-Module with Power Supply,
4 Data I/O-lines, 2 Chip Select signals, Clock and Serial I/O.


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

© Joerg Woerner, October 11, 2019. No reprints without written permission.