Sharp PC1211. This example exhibits a display that is failing.
CE-122 printer in travel case
Sharp PC-1211 is a small handheld computer, also marketed as Radio Shack TRS-80 Pocket Computer (aka "PC-1"). This model was powered by two 4-bit CPUs laid out in power-saving CMOS circuitry. One acted as the main CPU, the other dealt with the input/output and display interface.
- 24 digit dot matrix LCD
- Full QWERTY-style keyboard
- Integrated beeper
- Connector for printer and tape drive
- Programmable in BASIC
- Uses four MR44 1.35 V Mercury button cells
- Battery life in excess of 200 hours
- 1424 program steps, 26 permanent variable locations (A-Z or A$-Z$) and 178 variables shared with program steps
- Built out of off-the-shelf CMOS components, including SC43177/SC43178 processors at 256 kHz and three TC5514P 4 Kbit RAM modules
- CE-121 Cassette Interface
- CE-122 Printer