IBM 29 User Manual

Relay
311
315
317
319
319B
320
321
324
Point
1
2
3
4
1
2
3
4
5
6
1
2
4
5
6
1
2
1
2
1
2
3
4
5
6
1
2
3
4
5
6
1
2
Type
N/o
N/C
N/C
N/o
N/C
N/C
N/C
N/C
N/C
N/C
N/o
N/O
N/C
N/o
N/o
N/O
N/O
N/o
N/O
N/O
N/O
N/C
N/C
N/o
N/o
N/o
N/o
N/C
N/C
N/O
N/O
N/C
N/C
Purpose
Register lA, 4-bit relay ( 1 of 2)
Circuit to the interposer 5 magnet
out of the BCD decode tree.
Circuit to the interposer 3 magnet
out of the BCD decode tree.
Circuit to the interposer 2 magnet
out of the BCD decode tree.
Circuit to the interposer 7 magnet
out of the BCD decode tree.
Field-1 relay, controls circuit to inter-
poser magnets from the keyboard.
Circuit to interposer 9 magnet from
keyboard.
Circuit to interposer 8 magnet from
keyboard.
Circuit to interposer 7 magnet from
keyboard.
Circuit to interposer 6 magnet from
keyboard.
Circuit to interposer 5 magnet from
keyboard.
Circuit to interposer 4 magnet from
keyboard.
Punch-out relay controls circuits dur-
ing punch-out time of the left-zero
operation.
Hold circuit for relay 317.
Hold circuit for the read-out relays,
credit-field I relay.
Hold circuit for register IA during
part of the first read-out cycle.
Circuit to hold the keyboard restored
during punch-out.
Circuit for P3 to the A-registers after
the first read-out cycle.
Register 2A, 2-bit relay.
Hold circuit for relay 319A.
Pick circuit for relay 3I9B.
Register 2B, 2-bit relay.
Hold circuit for relay 3I9B.
Pick circuit to register IA, 2-bit relay.
Register IA, 4-bit relay ( I of 2).
Hold circuit to register IA, 4-bit
relays.
Circuit to the interposer 6 magnet
out of the BCD decode tree.
Circuit to the interposer I magnet
out of the BCD decode tree.
Circuit to the interposer 0 magnet
out of the BCD decode tree.
Circuit to the interposer 4 magnet
out of the BCD decode tree.
Register IA, 2-bit relay.
Hold circuit for relay 321.
Circuit for 2-bit decode for a 2 or 6.
Circuit for 2-bit decode for a I or 5.
Circuit Jor 2-bit decode for a 0 or 4.
Circuit for 2-bit decode for a 3 or 7.
Field-2 relay, controls circuits to in-
terposer magnets from the key-
board.
Circuit to interposer 3 magnet from
keyboard.
Circuit to interposer 2 magnet from
keyboard.
Relay
325
326
327
328A
328B
329
330
Point
3
4
5
6
1
I
2
3
4
5
6
I
2
3
4
I
2
I
2
1
2
3
4
I
2
3
4
5
6
Type
N/C
N/C
N/C
N/C
N/O
N/o
N/o
N/C
N/C
N/o
N/O
N/O
N/o
N/o
N/O
N/o
N/o
N/O
N/O
N/o
N/O
N/o
N/O
N/o
N/o
N/C
N/C
N/O
N/o
Purpose
Circuit to interposer 1 magnet from
keyboard.
Circuit to interposer 0 magnet. from
keyboard.
Circuit to interposer I I magnet from
keyboard.
Circuit to alpha-relay from starwheel
I and 7.
Field-3 relay, controls the digit-11
line from the keyboard to the left-
zero relays.
Circuit to pick the punch clutch and
the credit-field 1 relay.
Read-out relay, controls circuit dur-
ing read-out time of a left-zero
field.
Hold circuit to the read-out relay
and credit-field I relay.
Pick circuit to the punch-out relay.
Prevents P3 pulse to the A-register
during the first read-out cycle of a
left-zero field.
Pick circuit to multi-punch relay dur-
ing credit punching.
Hold circuit to the B-registers during
the first part of the first read-out
cycle.
Circuit to the BCD decode tree from
P5.
Credit-Field 2 relay, set up circuits
to energize the interposer 11 mag-
net at the units position of the
field.
Hold circuit to relay 327.
Circuit to energize the interposer I I
magnet.
Circuit to energize the multi-punch
relay.
Register 2A, I-bit relay.
Hold circuit to relay 328A.
Pick circuit to relay 328B.
Register 2B, I-bit relay.
Hold circuit to relay 328B.
Pick circuit to register lA, I-bit relay
( 330).
Register IA, 8-bit relay.
Hold circuit to relay 329.
Circuit for 8-bit decode for a 0.
Circuit for 8-bit decode for an 8 or 9.
Register IA, I-bit relay.
Hold circuit to relay 330.
Circuit to the interposer 9 magnet
out of the BCD decode tree.
Circuit for I-bit decode for a 0, 2, 4,
and 6.
Circuit to the interposer 8 magnet
out of the BCD decode tree.
Circuit for I-bit decode for a I, 3,
5, and 7.
~-3

IBM 29 Specifications

General

Brand	IBM
Model	29
Category	Computer Hardware
Language	English