background image

2

2

3 IC362

1

n(S32•M)

  (3)

P3

13

10
11
12

IC361

R2

M

8

9 IC362

10

CQDGT

n(S31•nQ)

  (3)

P3

9

8
5
6

IC361

nQ

R1

n(S32•D)  

(3)

P3

1

4
3
2

IC361

R2

D

11

12 IC362

13

P3

9

5
6
8

IC351

R3

D

P3

1

4
3
2

IC351

R0

nQ

n(S30•nQ)

  (3)

P3

13

10
11
12

IC351

R0

Q

n(S30•Q)

  (5)

10

13

IC352

9

12
11

P3

R3

nQ

M

CQXNZ

11

12 IC382

13

n(S33•M•nQ)

  (3)

4

6

IC352

5
3
2

P3

R3

Q
M

n(S33•M•Q)

  (3)

12

11 IC363

13

nQ

2

3 IC363

1

Q

n(S32•M•nQ)

  (3)

n(S32•M•Q)

  (4)

9

8 IC363

10

nQ

5

6 IC363

4

Q

n(S33•D•nQ)

  (2)

n(S33•D•Q)

  (3)

CQXB1

N361 N259

4

6

IC342

3
5
2

P2
R2

M
Q

n(S22•M•Q)

  (1)

P3

9

5
6
8

IC341

R1

Q

n(S31•Q)

  (4)

13

11

12 IC334

n(S30•nQ)

n(S32•M•nQ)

CQY

M

12

11

13

IC371

3

1

IC313

8

9 IC371

10

P1

n(S11•N•nQ)

CQDNE

d

9

6
5
8

IC335

e
b

CBX

c

13

12
11
10

IC335

n(S20•Q)

n((R2+R3)•KN)

CBD

10

8

9 IC367

n(C•R0•KF)

n(S11•nN•nQ)

CDX

3

2

1

IC372

11

12 IC372

13

P2

R3

n(S23•M)

  (1)

nS23

  (2)

10

13

1

n2

IC311

12

11

13

3

2

3

2

1

11

12

13

IC332

IC332

6

IC311

9

10

8

4

5

1

nKCLR

OP•ØD0•B1p

5

6

4

9

8

10

IC332

IC332

5

6 IC331

4

2

3 IC331

1

11

12 IC331

13

8

9 IC331

10

1

n1

2

n1

n2

1

n2

n1

2

1

2

n2

IC312

12

11

13

3

2

9

8

3

2

IC322

IC322

6

IC312

9

10

8

4

5

1

6

5

4

12

11

IC322

IC322

11

12 IC321

13

2

3 IC321

1

8

9 IC321

10

5

6 IC321

4

1

n1

2

n1

n2

1

n2

n1

2

1

2

1

2

n2

nKMD

nKMD

OP•ØD0•B1p

OP•ØD0•B1p

OP•ØD0•B1p

5

6 IC324

4

N302

P0

P1

P2

P3

R0

R1

R2

R3

nR2

nR1

R1+R3

R2+R3

R0+R1

3

6

IC386

4
2
5

nKCLR

n(S12•nQ)

f

3

IC384

4
1
2

8

11
12

5
6

nKZR

nS20

n(P1•nR2•nQ)

n(nC•KF)

n(S22•Q)

n(S30•nQ)

n(C•KF)

n(S31•nQ)

J

K

Q

nQ

J

K

Q

nQ

J

K

Q

nQ

J

K

Q

nQ

1

IC337

6

12

2

8

3
5

11

4

nKZR

n(C•KF)

n(S32•M)

nKCLR

n(S32•D)

n(S20•Q)

1

IC385

2
3
5

8

11
12

6
4

nKRC

nS23

n(S13•nQ)

n(S33•D)

11

IC357

12

5
6

8

1
4

3
2

nKN

nKZR

n(C•KF)

nKRC

n(S30•Q)

n(S20•nQ)

n(P1•nR2•nQ)

n(S33•M•nQ)

n(nR1•nMD•N•KF)

N202

nP0

  to OP

13

11

12 IC324

nR1

N

KF

9

5
8
6

IC323

nC

4

6

IC315

5
3
2

nR1

N

nC

KF

CYDL

       

to X Reg

      

to C-bit

        

to KB

R0+R1 t

o KB

CS10S1
S23 

to Display Latch

N369 N267

CDDn15

N265

nKZC

9

8
5
6

IC353

n(S11•nN•nQ)

N370

4

5

6 IC367

n(S13•nQ)

N345 N224

CBZ

CZØ

P Register

R Register

Note:  S

pr

 = P

• R

r

CDS16

CZS10

CAD15

Facit  1123  Calculator

Section: Control (part 2)

 Page: 7

Rendition: 2014 Mar 6

NK15

CA54

nC

nKCLR

nC

nC

nC

NR18

NR15

Summary of Contents for 1123

Page 1: ...Arithmetic 10 Display Latch Display 11 Power Supply 12 Timing Diagram 13 IC Pinouts Physical Layout 14 Connectors 15 Facit 1123 Calculator Facit 1123 Calculator Section Title and Contents Page 1 Rend...

Page 2: ...ng Master timing Master clock from which all timing is derived This is the basic bit rate B Bit timing D0 D15 Digit Timing 16 digit intervals D2 D15 are the displayed digit time periods Registers do n...

Page 3: ...c Control 14 Nixie Displays Keyboard 43210987654321 Y Register 60 bits Decimal Point Register 4 bits decoder p Bx bit timing Dx digit timing Timing OP clock rate selection Display Latch 4 bits VCC log...

Page 4: ...IC161 5 4 3 N108 n D0 n1 n2 n4 n8 1 n2 n4 n8 n1 2 n4 n8 1 2 n4 n8 n1 n2 4 n8 1 n2 4 n8 n1 2 4 n8 1 2 4 n8 n1 n2 n4 8 1 n2 n4 8 n1 2 n4 8 1 2 n4 8 n1 n2 4 8 1 n2 4 8 n1 2 4 8 1 2 4 8 9 12 4 5 3 2 1 n1...

Page 5: ...25 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 B24 B48 12 11 IC245 13 13 p 5 6 IC236 4 9 8 IC236 10 2 3 1 IC236 11 12 IC236 13 N249 OP B1p D0 5...

Page 6: ...nQ n S30 Q n S11 N nQ a d n S23 M 11 IC365 6 4 5 8 3 2 1 12 CSCC n S30 Q n S31 nQ n S33 M Q n S32 M Q n S33 D Q n S31 Q N340 N239 11 13 IC375 10 12 9 e b nKCLR CYS16 N339 N241 N269 N368 N266 10 5 6 4...

Page 7: ...31 1 11 12 IC331 13 8 9 IC331 10 1 n1 2 n1 n2 1 n2 n1 2 1 2 n2 IC312 12 11 13 3 2 9 8 3 2 IC322 IC322 6 IC312 9 10 8 4 5 1 6 5 4 12 11 IC322 IC322 11 12 IC321 13 2 3 IC321 1 8 9 IC321 10 5 6 IC321 4 1...

Page 8: ...C232 5 6 IC221 4 3 2 IC221 1 11 12 IC221 13 9 8 IC247 10 9 11 12 IC269 13 8 IC269 10 11 12 IC228 IC227 IC226 IC225 IC224 IC223 IC222 13 9 9 9 9 9 9 9 12 11 1 nDL2 nDL4 OP n D15 nD0 3 2 4 IC258 OP 1 2...

Page 9: ...play decimal points N347 N105 N107 N109 N115 N113 N111 N103 DPNE to Q Flag DPGT to Q Flag to Q Flag DPR to X Register Arithmetic nDP2 nDP3 nDP4 nDP5 nDP6 nDP0 nDP1 NK13 NK12 NK20 IC387 4 5 3 2 6 12 11...

Page 10: ...15 N352 D15 13 10 11 12 IC359 N343 N245 1 2 3 IC360 4 5 6 IC360 N346 N247 10 9 8 IC360 X X CAD15 CS10S1 CAX CBY CAY CSCC CSTC CBX CBD CA15 nX1 ASUM10 to X Z DP Registers nX4 nX8 CSCC nX1 1 10 9 IC264...

Page 11: ...P3 nDP4 nDP5 nDP6 B1 V a2 V a2 V a2 V a2 V a2 V a2 V a2 V a2 Facit 1123 Calculator Section Display Latch Display Page 11 Rendition 2014 Mar 6 nDL4 6 5 11 12 13 N119 20K IC111 100pF N220 8 9 10 11 12 1...

Page 12: ...64 365 374 376 383 384 385 121 122 131 132 141 151 161 162 246 273 315 319 329 333 342 352 358 375 386 368 388 M5330 7 14 231 237 241 242 243 258 316 323 335 341 351 353 359 361 377 378 380 M5340 7 14...

Page 13: ...480 520 560 600 640 0 S Dn DISP 40 KHz nDISP 100 KHz DISP 625 Hz nDISP 1563 Hz D0 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 one full number cycle in registers Digit held in display latch after B1p 14...

Page 14: ...cc 5V 0V GND M5320 M5310 M5373 J K K J nQ Q Q nQ nC nC Vcc 5V 0V GND M5304 M5352 M5391 Vcc 5V 0V GND Vcc 5V 0V GND Vcc 5V 0V GND Vcc 5V 0V GND Vcc 5V 0V GND D Q 14 13 12 11 10 9 8 1 2 3 4 5 6 7 14 13...

Page 15: ...P 37 38 Z 37 38 CSTC CSTC 37 38 Z nDL8 39 40 CYS16 39 40 CSCC CSCC 39 40 nDL8 nDL4 41 42 NR remote NR remote NR remote X ENB 41 42 nOP D14p CYS16 41 42 nDL4 GND 43 44 GND 1 key 1 17 nMANUAL 30 key DP...

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