The Tandy PC-4 Was a rebadged version of the Casio PB-100.
Apart from the brand/model plate, the design and features was identical to the original Casio model.
Please consider donating your old computer / videogame system to Old-Computers.com or one of our partners from anywhere in the world (Europe, America, Asia, etc.).
I was born in 1966 and was living in Paris when this little "marvel." I was like 13-14 yrs old when my mother bought it for me it cost 778 FF (Francs frnçais)which was a quarter of the minimum agreed salary in France, so it was not cheap when it first came out but what a joy to have this in class, the teachers thought it was a scientific calculator (which it was lol) but so hand for history AND maths or other exams with the answers "hidden in the box" behind the looks of calculator lol. I wrote a short program that displayed a clock running late less than a sec per day in 45 minutes.
Thursday 10th November 2022
Sanjin Grandić (Croatia)
I have a working Tandy PC-4 that belonged to my oldest brother. I popped some new batteries in 3 months ago and it worked. Nice to be programming in BASIC again.
Monday 24th May 2021
Greg Bzdell (Canada)
Rich, I''m interested in the interface. What would you sell it for?
Thursday 14th March 2013
jds
NAME
TRS 80 PC-4
MANUFACTURER
Tandy Radio Shack
TYPE
Pocket
ORIGIN
Japan
YEAR
1982
END OF PRODUCTION
Unknown
BUILT IN LANGUAGE
Basic interpreter
KEYBOARD
53 keys with numeric keypad
CPU
HD61913 CMOS VLSI
SPEED
455 kHz ceramic resonator used as system clock
RAM
1 KB (544 bytes for Basic programs) up to 2 KB
ROM
12 KB
TEXT MODES
1 line x 12 chars plus a 4 digit seven segment display part
GRAPHIC MODES
None
COLORS
Monochrome LCD
SOUND
None
SIZE / WEIGHT
165 (W) x 71 (D) x 10 (H) mm / 116 g (with batteries)
I/O PORTS
12-pin expansion port for printer and cassette interface 11-pin internal slot for memory module
POWER SUPPLY
2 x CR-2032 lithium batteries
PERIPHERALS
1 kB RAM PACK, cassette interface, mini thermal printer (from Tandy or Casio)
