Accession Number:
AD0870642
Title:
Electronic Systems with Ferrite Memory Blocks,
Descriptive Note:
Corporate Author:
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
Personal Author(s):
Report Date:
1970-05-01
Pagination or Media Count:
20.0
Abstract:
In modern digital computers, ferrite core memories are generally used as the ready-access storage. Recent advances in ferrite core production make it possible to design memories with an operating cycle of 1 msec or less and a capacity of tens of thousands of words. The generally-used coincidence system makes greater demands on the cores, but gives great system economy over systems with linearly selective memories. The UMC-10 general-purpose digital computer developed in the Department of Computer Design of the Warsaw Polytechnical Institute uses a ferrite memory 4092 forty-bit words, coincidence system as the rapid-access storage. The present article is limited to a description of the systems which actually control the memory operations, i.e., the switching current generator, the address-selecting system in the storage plate, the readout amplifier channel, the record-readout switch, and the recording forbid current generator. A schematic diagram of the memory and electronic systems is given in a figure.
Descriptors:
Subject Categories:
- Computer Hardware