IBM 7090 User Manual

Development of Program
Binary Equivalent
BCD Word
CONTENTS OF ACCUMULATOR
CONTENTS OF MQ
P, 1-19 21-35
S1-5 6-11
-17
-23 -29 -35
LDQ BCD WORD
XX XX
*7 0
9
542
CLM
00 00
CAQ 3000,
0, 6
RQL 6
Series of Steps
within CAQ
Next
C(MQ)
Start
Table Table
Start Lac
S,
1-5
Lac
Refer
C(-)S, 1-19 C(-) 21-35)
Count
7
+
3000 = 3007 2,527,140
3100
+ 2,527,140
3100
5
~
0
+
3100 =
3100
0 3200
+
0
3200
4
t+:-
o
=
2,527,140 6300
9
+
3200 = 3209
21,450
3300
+
21,450
3300
3
=
2,550,610
9600
5
+
3300 = 3305
764 3400
+
764
3400
2
=
2,551,574
13000
4
+
3400 = 3404
50 3500
+
50
3500
1
=
2,551,644
16500
2
+
3500 = 3502
2
-
+
2
-
0
7
o
9 5 4 2
=
2,551,646
16500
ARS 16 (Binary Equivalent)
~ 2,551,646
SLW

IBM 7090 Specifications

General

Category	Mainframe Computer
Introduced	1959
Transistor-based	Yes
Word Length	36 bits
Add Time	4.8 microseconds
Memory	Core memory
Memory (words)	32, 768 words