Block Diagram - Casio DL-270B Service Manual

2. BLOCK DIAGRAM

SO1 ~ SO7
Slide switch
SI1 ~ SI3, SI5
KO1 ~ KO8
Keyboard
KI1 ~ KI6
Display tube
SC131MH
Segment signal
S1 ~ S7, SAP, SDP
MN158418YCY
VDD
GND
VSS
Power supply
— 2 —
Digital signal
D1 ~ D13
Ribbon shift signal
Character selective signal
CPU
Timing pulse
Motor control signal
Motor power supply
Detector power supply
circuit
VF1, VF2
Printer
M-80