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NAME  

FX-720P

MANUFACTURER  

Casio

TYPE  

Pocket Computer

ORIGIN  

Japan

YEAR  

1982

END OF PRODUCTION 

Unknown

BUILT IN LANGUAGE 

Basic interpreter

KEYBOARD  

QWERTY calculator type 54 keys with numeric keypad

CPU  

HD61913 CMOS VLSI

SPEED  

455 kHz ceramic resonator used as system clock

RAM  

2 KB (1568 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  

FA-3 cassette interface, FP-12 mini thermal printer, Memory modules

PRICE  

$200 including cassette interface and printer

 

Casio FX-720P

The FX-720P is quite the same machine as the PB-80/100, but is a member of the more scientifically oriented FX product family. Consequentially, it is called "Programmable Calculator", as most FX family members.

It has 2 KB RAM, i.e. it was equipped with two HD61914 RAM chip instead of one like the PB-80/100, but no further RAM expansion was ever made available. Moreover, the mathematical functions (SIN, COS, etc.) were assigned to the keyboard, by means of an additional function key. Apart from that, the hardware of the two machines are identical.


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