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The first model sold by RadioShack.

Technical specifications of computer Tandy TRS-80

Manufactured by: Tandy
Launched: 1977
Discontinued: 1981
Units shipped: 100 000
Manufactured in USA
CPU: Zilog Z80 @ 1.774MHz
Memory: 4 KB ~ 48 KB
Hard drive: None
Operating system: BASIC

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Contemporary computers of Tandy TRS-80


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Manufacturer: IMSAI
CPU: Intel 8085 @ 3 MHz


This evolution of the IMSAI 8080 had two 80/160KiB floppy disk drives built in, retained the S-100 bus, and had a built-in CRT monitor.

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Manufacturer: IMSAI
CPU: Intel 8085 @ 3 MHz


This was the evolution of the IMSAI VDP40.

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Manufacturer: IMSAI
CPU: Intel 8080 @ 3 MHz


The PCS 80 came with a host of peripherals: line and character printers, CRT terminals, smart keyboards, 8" and 5.25" floppy disk storage.

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