DATAMATH PICTURES

This Texas Instruments TI-88 "DVT 3 (Design Validation Test 3) Build" was not manufactured in January 1981 by Texas Instruments in Abilene, TX (Date code ATA 0181 » wk 01 yr 1981) - our research indicates December 1981.
The two module ports of the TI-88 accommodate either Solid State Software modules or Constant Memory Expansion Modules.
The printed circuit board (PCB) of the TI-88 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 "DVT 3 Build" with Serial Number 0000049.
The rechargeable battery pack of the TI-88 with just one AA-sized NiCd battery in a small plastic housing.
The rear view of the TI-88 with both the Modules and rechargeable battery removed.
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.