公开(公告)号：US3590230A

公开(公告)日：1971-06-29

申请号：US3590230D

申请日：1969-04-03

Applicant: BELL TELEPHONE LABOR INC

Inventor： NORDQUIST WALTER R

IPC: G06F7/50 ,  G06F7/502 ,  H03K19/32

CPC classification number: G06F7/502

Abstract: A simple, fast, low-power-consumption full adder, suitable for fabrication in integrated circuit form, includes in each stage thereof two identical exclusive-NOR circuits and a three-input variation of the exclusive-NOR circuit.

公开(公告)号：US3543243A

公开(公告)日：1970-11-24

申请号：US3543243D

申请日：1967-09-13

Applicant: BELL TELEPHONE LABOR INC

Inventor： NORDQUIST WALTER R

IPC: G06F5/08 ,  G11C19/00 ,  H04L25/45 ,  G06F7/28

CPC classification number: G06F5/08 ,  G11C19/00 ,  H04L25/45

公开(公告)号：US3618033A

公开(公告)日：1971-11-02

申请号：US3618033D

申请日：1968-12-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： NORDQUIST WALTER R ,  TOY WING N

IPC: G06F5/01 ,  G11C19/28 ,  H03K21/00 ,  H03K23/00

CPC classification number: G11C19/28 ,  G06F5/015

Abstract: Shift register circuitry is disclosed in which bidirectional gates are connected between register stages in such a manner that data may be shifted in either direction through a gate to alter the state of either interconnected stage. By use of the bidirectional gates the shift register circuitry can store the logical AND or OR of the contents of the interconnected stages without employing additional complex control or steering circuitry intermediate the register stages. The shift register circuitry can also be used in various data processing shift and rotate functions in which a second register acts as intermediary for the shifting or rotation of data through a first register.

公开(公告)号：US3617643A

公开(公告)日：1971-11-02

申请号：US3617643D

申请日：1969-07-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： NORDQUIST WALTER R ,  TOY WING N

IPC: H04Q11/04 ,  H04J3/00

CPC classification number: H04Q11/04

Abstract: In a time division switching system, speech samples from a subscriber station are first encoded and then stored, in digital coded form in a register in a transceiver. The output of this register is gated to a second register in the common talking bus or highway during a first portion of a time slot; the sample from this register in the common highway is gated in a later portion of the same time slot to a similar transceiver connected to the called subscriber. It is then subsequently decoded and applied to the called subscriber. Two-wire, four-wire, and conferencing arrangements are disclosed.