A rapid, flexible, parallel-access, heca-bit reading and storage scheme

Abstract

A paper tape data-handling system is described which can present 288 bits of information simultaneously; each bit having its own isolated output. The system utilizes a fast single-line paper tape reader, storage circuitry and circuitry to control the entry into storage. The rate of changing from one block of bits to a new block is 200 msec; this means that 5 blocks of information can be scanned per second. Aside from the speed of entry, the storage capacity can easily be increased or decreased depending on the need. The feasibility and the reliability of this system rely on the characteristics of a solid state ring counter which can handle load requirements without buffer circuitry and whose cost and size are much less than similar gating devices. The authors describe, a reader system which is felt to be the preferred alternative to the block reader in preprogrammed data situations.