IBM 7090 User Manual

Gate Shift Left
-A
Left Out
MQ Right In
-0
+TOA
+TOA
-A
MQ Left In
SR
Right Out
+
tM
-R
-R
ht
-A
Gate MQ to SR
SR
- MQ
7.1-4.
MQ POSITION
Gate AC - SR
.-----
-A
~
AC - SR
.-----
r---
.-----
'---
AC Left In
-0
+TAO
+TAO
AC Rij:# In
AD to AC
I--
+Set AC
'---
-
I--
,----
-R
r---
-R
-A
-
'---
~
-Hold Ace
Right
Out
I
'----
Gate Shift Right
.-----
~
-A
Gate Shift Left
Left
Out
'---
.-----
-A
'---
Gate AC - AD
AC - AD
L---
.-----
-A
-Gate Not AC - AD (Comp)
Not Ace to AD
'---
(Comp)
7.1-5. ACCUMULATOR REGISTER
169

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