Casio PR-420A User Manual

— 1 —
Display tube
13-LT-09G
CPU
MN158418YCY
Power supply
circuit
Slide switch
Keyboard
Printer
M-80
VF1, VF2
Ribbon shift signal
Character selective signal
Timing pulse
Digital signal
D1 ~ D13
Motor control signal
VDD, VSS
Sent signal
Sa ~ Sg, SAP, SDP
SO1 ~ SO7
SI1 ~ SI3, SI5
KO1 ~ KO8
KI1 ~ KI5
VIM, VDD
1. SPECIFICATIONS
Roll paper size : Width: 57 ~ 58 mm
Ink ribbon : Red/Black: RB-02
Green/Black: GB-02
Power source : AC 100, 120, 220 or 240 (±10 V), 50/60 Hz
• Refer to the operation manual for other specifications.
2. BLOCK DIAGRAM

Casio PR-420A Specifications

General

Brand	Casio
Model	PR-420A
Category	Calculator
Language	English