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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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---
title: Casio FX-702P
categories:
- Computers
types:
- Pocket
origins:
- Japan
years:
- '1981'
cpus:
- 4 bit CMOS LSI
params:
name: FX-702P
company: /companies/casio
company_name: Casio
specs:
- label: NAME
value: FX-702P
- label: MANUFACTURER
value: Casio
- label: TYPE
value: Pocket
- label: ORIGIN
value: Japan
- label: YEAR
value: '1981'
- label: END OF PRODUCTION
value: Unknown
- label: BUILT IN LANGUAGE
value: Basic interpreter
- label: KEYBOARD
value: 65 keys, calculator type with alphanumeric keys (non-QWERTY)
- label: CPU
value: 4 bit CMOS LSI, 4 x NEC D444G
- label: SPEED
value: Unknown
- label: RAM
value: 1680 bytes for BASIC plus 26 memories
- label: ROM
value: Unknown
- label: TEXT MODES
value: 1 line x 20 chars plus a 4 digit seven segment display part
- label: GRAPHIC MODES
value: None
- label: COLORS
value: Monochrome
- label: SOUND
value: None
- label: SIZE / WEIGHT
value: 165 (W) x 82 (D) x 17 (H) mm / 176 g (with batteries)
- label: I/O PORTS
value: 7-pin expansion port for printer and cassette interface, 11-pin slot for memory module
- label: POWER SUPPLY
value: 2 x CR-2032 lithium batteries
- label: PERIPHERALS
value: |-
FA-2 cassette interface\
FP-10 mini electro printer: electrostatic printer for 35 mm metallised paper
- label: PRICE
value: '250'
tabs:
- photos
- adverts
- hardware
- links
photos:
- title: FRONT VIEW
subtitle: ''
text: Roman Von Wartburg
image: null
- title: KEYBOARD CLOSE-UP
subtitle: ''
text: ''
image: null
- title: BOTTOM SIDE
subtitle: ''
text: |-
**(1)** Batteries housing\
**(2)** RAM module connector\
**(3)** Expansion port
image: null
- title: INSIDE
subtitle: ''
text: |-
**(1)** Display driver chips\
**(2)** Four NEC CMOS LSI chips in charge of CPU functions, ROM and RAM memory and I/O ports\
**(3)** Expansion connector\
**(4)** LCD contrast knob
image: null
- title: MANUALS
subtitle: ''
text: The FX-702P vas delivered with a user manual and a very useful program library gathering more than 70 programs and complex calculations
image: null
- title: THE BOX
subtitle: ''
text: Both sides of the FX-702 box.
image: null
adverts:
- title: FRENCH ADVERT (MAY 1982)
subtitle: ''
text: |-
"Computing pret-a-porter"
"Casio FX-702P : pocket Basic"
"Casio, it counts"
image: null
- title: FRENCH ADVERT (DEC. 1983)
subtitle: ''
text: '"Basic, It is magic"'
image: null
- title: FRENCH ADVERT (DEC. 1982)
subtitle: ''
text: |-
"Christmas accounts"
"Casio, it counts"
image: null
hardware:
- title: FA-2 INTERFACE
subtitle: ''
text: FA-2 tape recorder interface
image: null
- title: FP-10 PRINTER
subtitle: ''
text: The FP-10 Mini Electro Printer can be connected to the FX-601P/602P and FX-702P computers. It uses metalized paper rolls and prints 20 characters per line.
image: null
links:
- title: Silrun Systems
url: http://www.silrun.info/
text: Documentations to download for Casio pockets ! Useful.
- title: The Pocket Computer Museum
url: http://pocket.free.fr/
text: The site to visit for pockets computers !
comments:
- author: Jay (Canada)
date: Thursday 28th December 2017
text: Hello, I have FX-702 . Its still working in good condition. I still have operating instruction in Japanese language . I bought this in Nagoya Japan in 1980.
- author: Vexi (Finland)
date: Monday 2nd November 2015
text: Hi! I have FX-702P with FP-10 electrostatic printer and FA-2 Storage interface. Interested? voaa(at)hotmail.com
- author: AnthonyTan (china)
date: Saturday 14th June 2014
text: I want to ask how to manage molds in the cover of LCD? please if you have some time give me some answer and send to my email. 16xcore@gmail.com Thank you sooooo much guys :(
- author: ronald (Nederland)
date: Saturday 3rd November 2012
text: |-
I have still a good working FX-702P
Anybody interested ?
- author: David
date: Thursday 16th August 2012
text: Guys I''m desperately looking for a display for my FX-702P, anybody could help me please ? Thanks a million !
- author: David
date: Thursday 16th August 2012
text: Guys I''m desperately looking for a display for my FX-702P, anybody could help me please ? Thanks a million !
- author: Gustavo Avellar (Belo Horizonte - MG - Brasil)
date: Saturday 23rd September 2006
text: |-
You can find the manual for this calculator on this link:\
http://pocketcomputerworld.free.fr/Manuals/FX-702P.pdf
- author: Lupus (Brazil)
date: Monday 11th July 2005
text: |-
Hi Paolo,\
Did you get the manual? I am looking for one too!!!\
Lupus
- author: PAOLO GUENZI (BOLOGNA (ITALIA))
date: Thursday 25th November 2004
text: |-
I WANT ABSOLUTLY FUOND AN USER MANUAL OF CASIO FX-702P.WHO CAN HELP ME?I'M ESPECIALLY SEARCHING A MANUAL OF BASIC LANGUAGE.\
TANK YOU!
related:
- /museum/casio-fx-700p
- /museum/casio-pb-100
- /museum/casio-pb-300
oc_id: 987
source:
url: https://web.archive.org/web/20230605041544/http://www.old-computers.com/museum/computer.asp?c=987
date: '2023-06-05'
---
The FX-702P was Casio's answer to Sharp's [PC-121x](/museum/sharp-pc-1210-1211-1212/) series. In certain ways, this machine marks the transition from keystroke programmables such as the FX-601P/602P to "real" pocket computers. On the one hand, Casio labeled the FX-702P only as "Programmable Calculator", and its non-QWERTY layout of the alphanumerical keys differentiate it from most later pocket computers. On the other hand, the FX-702P had a viable BASIC interpreter which allows for more flexible programming.
The hardware mainly consists of four CMOS LSI chips incorporating logical functions and memory, and four display driver chips. The display provides 20 characters in 5x7 pixel matrix, plus a separate 7-segment display part indicating the remaining program memory.
Comparable to the Sharp PC-1211 and 1212, the FX-702P had about 2 KB of RAM, divided into 1680 BASIC steps and 26 memories; more memory for variables could be partitioned out at the expense of BASIC memory. A memory expansion slot was built-in, but a suitable RAM module never came out.
With this model, Casio introduced their method of dividing program memory into 10 autonomous areas - P0 to P9 - which continued to be implemented in all following Casio models for many years.\
The nonstandard keyboard makes it most cumbersome to use for anybody familiar with the QWERTY standard; on the other hand, triple assignments of most keys makes programming somewhat more efficient.
The built-in interpreter supports a variant of the BASIC language, with some keywords spelled in a different way than the later quasi-standard, e.g. PRT instead of PRINT, or GSB and RET for GOSUB and RETURN. Compared to Sharp's PC-121x models, it has substantially more mathematical and statistical functions, string manipulation functions and a more flexible variable handling scheme.
Two peripheral devices were available:\
• The **FA-2** Cassette Interface, which, as a side note, could also play musical notes when used with the FX-501P/FX-502P or FX-601P/602P calculators, but not with the FX-702P,\
• The **FP-10** Mini Electro Printer, a non-impact, electrostatic printer, which used special metalized paper.
Thanks to **Roman von Wartburg** and his [site](http://retrocomputing.ch/) for this information.