The time to execute instructions was highly dependent on where they were in memory ( due to the use of delay line memory ).
12.
By contrast, mercury delay line memory was slower and not truly random access, as the bits were presented serially, which complicated programming.
13.
This delay line technology would play an important role, serving as the basis of the delay line memory used in several first-generation computers.
14.
Employing approximately 1, 700 vacuum tubes, the computer's ultrasonic mercury delay line memory of 255 words, with an average access time of 500 microseconds.
15.
"' Delay line memory "'is a form of computer memory, now obsolete, that was used on some of the earliest sequential-access.
16.
It had 1, 152 words of memory ( thirty-six bits per word ), using delay line memory, with an access time of up to 305 microseconds.
17.
In planning a new machine, EDVAC, Eckert wrote in January 1944 that they would store data and programs in a new addressable memory device, a mercury metal delay line memory.
18.
In computer memories, latching relays and other relays were replaced by delay line memory, which in turn was replaced by a series of ever-faster and ever-smaller memory technologies.
19.
The accumulators were backed by what Ferranti called a " single-level store ", a main memory formed out of a series of torsional delay line memory elements storing 50 words each.
20.
Very large serial-in serial-out shift registers ( thousands of bits in size ) were used in a similar manner to the earlier delay line memory in some devices built in the early 1970s.
