DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This Texas Instruments TI-88 "PVT 1.5 (Production
Validation Test 1.5) Build" was manufactured
in May 1982 by |
|
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 "PVT 1.5 Build" with Serial Number 0000341. | |
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. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 11, 2019. No reprints without written permission.