favorite this post Collectable vintage PC TRS80-III - working in good condition - $400 hide this posting unhide

condition: excellent
make / manufacturer: tandy Corp/ Radio Shack

USED Vintage CPU TRS-80 model III

condition: excellent
working boots and processes commands

make / manufacturer: Tandy Corp/ Radio Shack
model name / number: III

Very rare- working condition *tested 5/2016*

*Original box included* which adds value to collection

own a piece of history for the avid collector or use for classrooms for teaching old technology.

Brief history:

TRS-80 was Radio Shack's iconic Premium Personal Computer back in the hey day of new technology emerging for homes small business.

They were a leaders in technology decades before they became nothing more then a cell phone dealer like today. Staff was knowledgeable in electronics and programmers.

This is the personal computer that was sought after in late 70s and 80s before Microsoft was even a household name. It's a piece of History and the cost back then was astronomical by today's inflation.

Manufactures price was $1200-1400 then.

I'm original owner it was $1200 back in 1981 when purchased.

Boot disk included (required for DOS at time)


Some minor cosmetic scratches
COMES with Original Box!


CPU: Advanced Z-80A 8-Bit Processor (2.03 MHz) Kits were sold to double this to 4Mhz

RAM: 4K -- 48K

ROM: 4K ROM (Level I) or 14K ROM (Model III BASIC -- co copyrighted by Tandy and Microsoft)
Video Display:

Memory mapped with high-resolution 12″ Black and White Integrated Monitor. Includes scroll protect with 96 text characters, 64 graphics characters and 160 "special" characters. Screen format for Level I and

Model III BASIC is 64 characters by 16 lines. Model III BASIC also provides 32 characters by 16 lines. Graphics are 128.

Full-size "typewriter' style, 65-key integral keyboard includes 12-key numeric pad for data entry plus repeating keys. Model III BASIC includes upper and lower case.

Computer-controlled cassette inferface, Parallel Printer interface, internal 25 pin RS-232-C (Serial) Port, Buffered Bus for adding 2 Internal and 2 external double-density 5 1/4-inch disk drives.

Integral power supply of 105-130VAC @ 60 Hz. U.L. lited.

Dimensions: 12-1/2 x 18-7/8 x 21-1/2″
Optional Expansions:

Internal (2) and External (2) 5.25″ Floppy Drives holding 178K each

Optional Hi-Res Graphics Board


Substantial Compatibility with the Model I (main incompatibility: Port vs. Memory address
Offers will be considered for serious buyers

local pick up only


Asking $450 - reasonable offers considered.

  • do NOT contact me with unsolicited services or offers

post id: 6856076259



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