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Keyboard
KC, KCI, KCM,
KA, KT, KP, KR
KE, KS, KX, K÷
K0...K9
Numeral
KN
Encoder
W1,W2,W4,W8
Canon 161 Calculator
Section: Block Diagram
Page: 3
Rendition: 2022 Feb 6
TD (Time Digit)
Timing
Counter
(5 bits)
CP
T- n
digit timing
bit timing
F–
FS
Flag
Flag
FX
F÷
Flag
Flag
ME16D=0
K..., F..., CC...
ME15D=0
to all sections
ME Register
(User Memory, 64 bits)
MSD=0
Arithmetic
IR16D=0
(serial adder)
IR15D=0
IR Register
(Indicating Register, 64 bits)
16 1-of-10 Decoder/Drivers
FM
Flag
FM
–10V
+10V
TD n
logic supplies
FG
FCO
Flag
Flag
C C 0
FH
FZ
FCU
Flag
Flag
Flag
ACC16D=0
CA
ACC15D=0
ACC Register
(Accumulator, 2nd Op, 64 bits)
Decoder/Drivers
16 Incandescent Displays
6543210987654321.
Power Supply
–10(K)
–V(L)
display supply
AC=0
State
FO
Machine
Flag
C C 7
BC=0
Control
PC=0
DC=0
FP
FD
Flag
Flag
P Counter
D Counter
(Point, 4 bits)
(Digit, 4bits)
1-of-16
1-of-16
Decoder/Drivers
Overflow
Lamp
A Counter
FA
(4 bits)
Flag
B Counter
FB
(4 bits)
Flag
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