Back to Home Page |
Notes |
Manufacturer |
Casio (Japan) |
Model |
FX-785P and FX-790P |
Date Launched |
1986 |
Price |
Approx £80 (FX-785P) |
Microprocessor type |
HD61747B20 (Main CPU - responsible for BASIC control, the lower keyboard and digits 1 to 6 & 13 to 18 of the display) |
ROM size |
Not known |
Standard RAM |
2 kilobytes (FX-785P) |
Maximum RAM |
10 kilobytes (FX-785P) |
Keyboard type |
Moving rubber keys on the lower half (numeric and calculator functions). |
Supplied language |
BASIC |
Text resolution |
LCD display, 1 line of 24 characters |
Graphics resolution |
No graphics |
Colours available |
Monochrome |
Example Screenshot |
|
Sound |
Beeper with two notes |
Cassette load speed |
Not known |
Dimensions (mm) |
142 x 71 x 18 folded |
Special features |
A pocket computer of folding design, similar in size to a pocket calculator. |
Good points |
Contained all the functions of an advanced scientific calculator, grouped on the lower half of the keyboard, in addition to being programmable in BASIC. |
Bad points |
The membrane keypad had no tactile feedback and the folding design meant you had to hold the top half tilted up with one hand while pressing the keys with the other hand. |
How successful? |
A number of different models of pocket computers were produced by Casio and Sharp in the 1980s but they never seemed to gain a large following. |
Comments |
The idea of a fully programmable computer which was small enough to slip into a jacket pocket was an interesting one, which does not seem to have an equivalent in 2006. Current PDAs are of course much more powerful but not intended to be programmed by the user and often do not have keyboards, while a laptop is too bulky to carry unless you are definitely going to need it, and anyway has a battery life of just a few hours. I can certainly testify to the long battery life of an FX-790P - mine has had only occasional use since 1991 but the batteries were still just about working at the start of 2005! |
Back to chronological list |
Home Page |
Next computer |