1A Processor: Organization and Objectives

Abstract

This paper presents an overview of the 1A Processor in terms of objectives, design philosophy, major features, and applications in the Bell System. It also serves as an introduction to the detailed technical papers that follow.

No.4 ESS: Peripheral System

“…This is called 1A Technology hardware and is described in detail in another B.S.T.J. special issue/ 1 Since much of the circuitry in the No. 4 ESS peripheral area is com posed of high-speed digital logic gates which are similar to the 1A Pro cessor circuitry, it was decided that the No.…”

“…4 ESS, the central processing function is performed by a new high speed integrated circuit unit, the 1A Processor, described in a special issue of the B.S.T.J. 1 The essential interconnection, signaling and in terface functions of the No. 4 ESS peripheral system are the subject of this paper.…”