DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Datamath Calculator Museum DCM-50A (TMS0100)
| Date of introduction: | September 21, 2022 | Display technology: | LED |
| New price: | $849.95 (2022 = $119.95 in 1972) | Display size: | 12 |
| Size: | 10.5" x 8.5" x 1.5" 267 x 216 x 38 mm3 |
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| Weight: | 17.4 ounces, 494 grams | Serial No: | 0001 |
| Batteries: | 4*AA | Date of manufacture: | mth 09 year 2022 |
| AC-Adapter: | DC 6V | Origin of manufacture: | USA |
| Precision: | Integrated circuits: | ZIF-Sockets for TMS0100, TMS0600, TMS0700, 3*SN75493, 2*SN75494 | |
| Memories: | Displays: | 12*HP 5082-7653 | |
| Program steps: | Courtesy of: | Joerg Woerner |
The
Datamath Calculator Museum DCM-50A (TMS0100) is based on the generic
DCM-50A
Platform to access all features of calculators based on Texas Instruments
single-chip calculator circuits and covers designs based on:
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TMS0100 Product Family including TMS1802 and TMS1875 TMS0600 Product Family TMS0700 Product Family |
With many of the single-chip calculator circuits either designed for Texas Instruments' proprietary applications or developed for OEM manufacturers, available documentation of their features is rather scarce and we are committed to provide as much information as possible to the calculator enthusiasts and we document our observations and findings here.
The Technology Section of the Datamath Calculator Museum features under Calculator Chips "Datasheets" of the mentioned product families.
Characterization of Single-chip Calculator Circuits
The DCM-50A Platform supports the Characterization of TMS0100 Devices including TMS1802 and TMS1875 in its leftmost TMS0100 Textool Test Socket with the voltages VSS set to 7.2V and VGG set to -7.2V, accordingly.
Device-under-Test:
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TMS1875NC - Heathkit IC-2008 (March 1972) TMS0101NC - Heathkit IC-2008A (May 1972) TMS0121NC - Olympia CD101 (August 1973) Work-In-Progress |
The DCM-50A Platform supports the Characterization of TMS0600 Devices in its leftmost TMS0100 Textool Test Socket with the voltages VSS set to 7.2V and VGG set to -7.2V, accordingly.
Device-under-Test:
| TMS0601NC - TI-2550 (October
1975) TMS0602NC - SR-11 (November 1974) TMS0603NC - Brother Model 827R (September 1974) TMS0604NC - Dittel TMP608 (August 1974) TMC0605NC - Canon LE-81M (June 1974) TMS0611NC - Craig Model 4518 (October 1974) |
The DCM-50A Platform supports the Characterization of TMS0700 Devices in its leftmost TMS0100 Textool Test Socket with the voltages VSS set to 7.2V and VGG set to -7.2V, accordingly.
Device-under-Test:
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TMC0138NC - Canon Pocketronic II (August 1974) Work-In-Progress |
Reverse-engineering of Single-chip Calculator Circuits
Work-In-Progress.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, September 21, 2022. No reprints without written permission.