发明名称 System for selectively shifting groups of bits for temporary storage in a processor memory of a telephone exchange
摘要 In order to improve the utilization of a memory in an electronic processor of a telephone exchange, serving for the temporary storage of one or more 4-bit groups (referred to as quartets) in zones of 16-bit capacity, a concentration unit in the input of a logic network and an expansion unit in the output thereof are controllable to switch incoming quartets from any group position to the position of the lowest-ranking group, or pair of groups, and to switch outgoing quartets from the lowest-ranking position, or pair of positions, to other group positions. The logic network is an arithmetic unit receiving the quartets from a data memory, or from a set of working registers serving for the storage of intermediate calculation results; the outgoing quartets are fed to the data memory, to the working registers, or to a buffer register connected to a control input of the arithmetic unit.
申请公布号 US4151375(A) 申请公布日期 1979.04.24
申请号 US19770795898 申请日期 1977.05.11
申请人 ITALIANA TELECOMUNICAZIONI SIEMENS 发明人 BAMBARA, MARIO;COTRONEO, FRANCESCO
分类号 G06F12/04;H04Q3/545;(IPC1-7):H04Q3/54 主分类号 G06F12/04
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