DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments PocketMate 140
| Date of introduction: | 1998 | Display technology: | LCD |
| New price: | Display size: | 12 char + 2*12 digits | |
| Size: | 3.5" x 5.3" x 0.5" 88 x 134 x 13 mm3 |
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| Weight: | 3.5 ounces, 98 grams | Serial No: | 0153791 |
| Batteries: | 2*CR2025 | Date of manufacture: | mth 10 year 1999 |
| AC-Adapter: | Origin of manufacture: | Thailand (C) | |
| Precision: | 10 | Integrated circuits: | single-chip CPU RAM: 32k Bytes |
| Memories: | 34k Bytes RAM | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(EU: 7.6 MByte) |
The
PocketMate 140 was introduced together with the smaller siblings PocketMate
100 and PocketMate 120 late in the market. The
PocketMate 140 is the successor of the PS-3960i.
| • The Telephone Directory stores names, addresses and
telephone numbers • The Scheduler stores appointments, meeting times and reminders • A flexible clock with 12-hour AM/PM or 24-hour time showing day of week • A calendar displays day of week and year of any schedule entry • A calculator with 10-digits display capacity and 12-digits of accuracy • World time of 30 cities in all 24 time zones supporting one home city and one world city |
The display of the PocketMate 140 consists - like the PocketMate 100 and 120 - of one line for alphanumeric characters and two lines supporting only numbers but is backlight illuminated.
Dismantling
this PocketMate 140 manufactured in October 1999 by Compal
Electronics in Thailand reveals a very clean architecture based on a
Toshiba Application Specific CPU and an additional memory chip with 32k Byte
capacity.
The
PocketMate 100 series is based on Chip-on-Board (COB) technology and we can't
decipher the manufacturer and types of the two Integrated Circuits hidden under
the two epoxy blobs.
All three members of the PocketMate 100 series make use of an identical printed circuit board which differ only in the populated components:
| Model | Integrated RAM |
External RAM |
Backlight Option |
| PocketMate 100 | 2k Bytes | --- | --- |
| PocketMate 120 | 2k Bytes | 8k Bytes | --- |
| PocketMate 140 | 2k Bytes | 32k Bytes | Yes |
The design of the PocketMate 140 fits neatly with the PocketMate 300 series.
The whole PocketMate series was discontinued in the year 2000.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 5, 2002. No reprints without written permission.