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TRS-80 Pocket Computer 4

Manufacturer Casio - OEM to Tandy/Radio Shack
Model PC-4
Date Announced 1983
Date Canceled Unknown
Number Produced Tens of thousands
Country of Origin Japan
Price $70
Current Value $10-$25
Processor HD 61913 CMOS
Speed ~.5 MHz
Storage Optional micro-Cassette
Expansion Connectivity to docking station/expansion interface with printer, cassette, etc.
Bus Proprietary
Video 12x1 text
I/O Cassette, Printer
OS Options Built-in BASIC
Notes The TRS-80 line of Pocket Computers were actually re-badged imports. In this case, the PC-4 was a re-branded Casio PB-100.
Related Items in Collection TRS-80 Pocket Computer 3 and other TRS-80 systems.
Related Items Wanted Docking station, software, etc.

The TRS-80 PC-4 was one of the low-end pocket PCs offered by Radio Shack in the early 1980s. It was fully programmable in BASIC but had limited memory and display capabilities. Expanded with a docking station it had a small printer, micro-cassette and, potentially, a bit more RAM.

TRS-80 PC-4 with manuals, etc.

The PC-4 in my collection was generously donated by Steven Pigeon

(Submitted October 9, 2010 02:32:34 by Axel)

I could have sworn my uncle had one of these. I wonder if he still has it, or if he ever had it. He had been big on the computers for awhile in the late 80's. Hmmm...

(Submitted November 4, 2009 06:06:49 by Eric Lentz)

Ah, this takes me back. I still have my pc-4 with all the addons for it. The tape adapter, the mini-printer with thermal paper and tape player. The only thing I never got I think was the memory expansion for it. Seeing Egon use the PC-4 in the first Ghostbusters movie keeps bringing back fond memories of when I used it for college. I wonder if anyone had any cool programs for it like I did?

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