3
×
÷
N328
N325
2.2K
2.2K
10K
CE
DP
×
÷
=
–
N211
CL
N335
0
1
2
3
4
5
6
7
8
9
RC
N306
N307
N308
N309
N310
N311
N312
N313
N303
N305
N329
N333
N319
N330
N332
N321
N331
11 of
20K
12
13
IC329
11
10
9
5
6
4
IC318
8
9
10
IC318
9
IC319
11
10
12
5
IC319
4
3
2
2
3
1
IC318
n1
n3
n5
n7
n9
n2
n3
n6
n7
n4
n5
n6
n7
n8
n9
6
13
n0
n1
n2
n3
n4
n5
n6
n7
n8
n9
2.2K
10K
12
11
13
8
9
10
IC327
IC327
8
9
10
IC328
5
6
4
IC328
N326
N324
N322
N320
12
IC310
11
6
5
8
1
2
4
3
n6
n8
n9
n0
n2
n4
N227
N225
N223
N221
K1
K2
K4
K8
5
IC326
4
2
3
8
1
12
11
6
11
12
13
IC317
nCE
nRC
nA
nS
nCE
nKCLR
nKCLR
11
12
13
IC318
4
IC329
5
2
3
nA
nS
nZA
nZS
6
nKMD
N323
N327
nZR
nZC
N315
N317
nZA
nZS
nZR
KF
M
KN
nKN
DISP
11
12
13
IC328
3
2
1
IC324
13
10
12
11
IC323
C
nC
M
D
C
D
nKCLR
1
2
3
4
IC323
KF
OP•ØD0•B4p
R1
9
5
8
6
IC316
1
2
4
3
IC316
A
nS
nA
nZA
5
6
4
IC354
9
8 IC354
10
nZA
nZS
OP•ØD0•B4p
4
IC314
3
2
8
11
12
1
1
3
4
2
IC359
nS
nA
nCE
N
nN
2
1
IC328
R0+R1
N213
N314
1
KP
to OP
nD
nM
nD
nM
nRC
nZC
nZR
nKRC
nKZC
nKZR
OP•ØD0•B1p
5
6
9
8
10
IC325
S11•nQ
nKCLR
nD
nZS
nRC
nZC
nM
to
X Register
NK10
NK36
NK43
NK45
nP0
NK18
M+
M–
MR
MC
12
IC246
9
10
11
ØB24
ØB48
12
11 IC245
13
13
Øp
5
6 IC236
4
9
8 IC236
10
2
3
1
IC236
11
12 IC236
13
N249
OP
ØB1p
ØD0
5
6
4
IC232
8
6
9
5
IC237
5
6
9
8
3
2 IC253
N203
20K
IC242
12
11
13
5
2
3
IC238
4
IC238
8
10
9
8
9
10
IC239
2
3
1
5
6
4
IC239
IC239
12
11 IC239
13
OP
ØD0•B2
8
9 IC257
10
6
N246
nOP
3
5
4 IC266
M5962
6
3
5
4
IC256
M5962
ØD0•B2
N263
nØD14
OP
N215
nOP
nP
DISP
to Display Latch
Øp
ØD1
N304
DISP
to Timing (clock rate)
DISP
to Keyboard
N137
N205
1
N256
Øp
ØD0•B2
OP•ØD0•B4p
OP•ØD0•B1p
n(OP•ØD0•B2p)
nKCLR
1
6
J
K
Q
nQ
J
K
Q
nQ
N316
N366
N365
N360
N342
nP0
nOP•ØD14p
11
12
13
IC355
OP
KP
NR17
NK01
NK02
NK03
NK04
NK05
NK06
NK07
NK08
NK09
NK30
NK37
NK35
NK31
NK32
NK33
NK34
NK38
NK39
NK??
NK??
Facit 1123 Calculator
Section: Keyboard & OP Flag
Page: 5
Rendition: 2014 Mar 6
11 of
20K
nC
nC
MANUAL
NORMAL
Controller / Monitor Unit
(see Notes page)
NR29
nMANUAL
NR27
NR10
NR01
NR02
NR03
NR04
NR05
NR06
NR07
NR08
NR09
NR30
NR37
NR35
NR33
NR34
NR31
NR32
NR38
NR39
NR??
NR??
NR36
620
BUSY
NR18
nP0
Use high efficiency
LED run at low
current (~ 3mA) to
minimise drain on
source.
NR44
Ø
NR45
nØD0
NR27
nOP
NR19
X
NR43
XØENB
NR42
ASUM16
TEST
POINTS
