IBM 7090 User Manual

-A
+A
-AS Output
1-------------1 -TOA I----------i
+Set PC17
Plus On AS to AR
+0
+R
Reset AR
-A +MF AR L·n
+8 Time
7.1-1. ADDRESS REGISTER
S8 3-11 to PR
MF S8
+0 +A
+TO A
OPK-PR
Out ut of PR
Reset Pr Re
-R
7.1-2. PROGRAM REGISTER
+SR - SI
+A
+Set Ind
+TOA
+A
Invert SI
-A
-R
Comp Output
-SR -SI
+A
+TOA
+A
-R
-A
SIOutput
-Reset SI
Gate SI - SR
7.1-3. SENSE INDICATOR
167

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