Texas Instruments Personal Learning Tool PLT USB1

Date of introduction:  never Display technology:  
New price:    Display size:  n.a.
Size:  1.5" x 2.8" x 0.55"
 38 x 70 x 14 mm³
Weight:  0.7 ounces, 20 grams Serial No:  
Batteries:   Date of manufacture:  
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:   Integrated circuits:  MAX710, 24LC32A
Program steps:   Courtesy of:  Texas Instruments

The Datamath Calculator Museum received this PLT USB1 Universal Serial Bus Module together with some unique graphing calculators as a loan from Texas Instruments in February 2008 to photograph and document it.

The Dallas, TX based team nicknamed it PET Project including three advanced graphing calculators:

• PLT SHH1: Spot Hand Held, first generation PET device with smaller, portrait oriented screen.
• PLT FHH1: Fido Hand Held, first generation PET device with larger, landscape oriented screen
PLT SU1: Toto Hand Held, second generation PET device with large, color screen.

This PLT USB1 Universal Serial Bus Module was developed for the PLT FHH1 and PLT SHH1 to connect with external devices using the USB 1.1 standard. The related PLT SHH1 offeres with the PLT DS1 Data Sled a second option to supports USB 1.1 connectivity.

PLT-USB1_PCB.jpg (147719 Byte)Disassembling the PLT USB1 reveals a rather complex circuitry with a serial EEPROM with 4k Bytes capacity and a power supply.

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© Joerg Woerner, March 6, 2008. No reprints without written permission.