DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments SS-1000 16K RAM EXPANSION Cartridge
| Date of introduction: | 1983 | Display technology: | |
| New price: | $149.95 (MSRP 1983) | Display size: | |
| Size: | 2.1" x 2.0" x 0.55" 53 x 52 x 14 mm3 |
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| Weight: | 1.1 ounces, 30 grams | Serial No: | 0023164 |
| Batteries: | n.a. | Date of manufacture: | wk 28 year 1983 |
| AC-Adapter: | Origin of manufacture: | USA (ATA) | |
| Precision: | Integrated circuits: | 2*HM6264LP | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
The
SS-1000 16K RAM EXPANSION Cartridge was developed by Texas
Instruments for its CC-40 Compact Computer System and
increases its power and versatility by increasing the memory capacity of the
computer. The additional memory provided by the 16K RAM cartridge can be used to
expand the total amount of memory available for BASIC programs and data storage,
or to increase the amount of memory available for machine language programs.
When using the 16K RAM cartridge to expand the memory of the
Compact Computer 40 with a standard resident RAM of 6k Bytes, the total amount
of memory available for BASIC programs is 18k Bytes.
Dismantling this
16K RAM EXPANSION Cartridge manufactured in
July 1983 by Texas Instruments in their Abilene, Texas facility, reveals a small printed circuit board (PCB) with
two HN6264L RAMs (Random Access Memories) manufactured by Hitachi, Japan.
The HM6264LP
uses a CMOS process resulting in a very low power standby consumption of 0.01 mW and
features a capacity of 8k Bytes with an access time of just 120 ns.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 19, 2019. No reprints without written permission.