Binary adder circuit
    2.
    发明授权
    Binary adder circuit 失效
    二进制电路

    公开(公告)号:US3902055A

    公开(公告)日:1975-08-26

    申请号:US44913374

    申请日:1974-03-07

    Applicant: IBM

    CPC classification number: G06F7/506 G06F7/501

    Abstract: An improvement in binary adder circuits based on a new Boolean algorithm is disclosed. The arrangement permits calculation of the carry from the logical combination of the addend, the EXCLUSIVE OR of the addend and the augend, and the carry of the next preceding stage. The circuit is readily implemented in NOR logic and has particular application in large scale integrated circuits (LSI).

    Message assembly and response system
    3.
    发明授权
    Message assembly and response system 失效
    消息汇编和响应系统

    公开(公告)号:US3662348A

    公开(公告)日:1972-05-09

    申请号:US3662348D

    申请日:1970-06-30

    Applicant: IBM

    Inventor: WEISS ALFRED

    CPC classification number: G06F3/16

    Abstract: An information system which may be employed as a voice answer back system for assembling and transmitting separate messages on separate output lines. The basic components of the system are a rotating, fixed head sequential memory file, an associative memory, and a group of buffer storage units. Address keys for the words of the messages are obtained from a central processing unit. The rotating memory contains the entire file of message words stored in equal length segments of digital signals and each are identified by a key address. Message words may consist of a number of segments, each having the same key address and further identified by consecutive segment numbers. As the sequential memory is rotated, the key addresses of the segments are compared with the key addresses in the associative memory; and when matches occur, the segments are retained in buffer storages. As each segment of a key address is obtained, the segment is transferred to the output of the system.

    Abstract translation: 可以用作语音应答系统的信息系统,用于在单独的输出线上组装和发送单独的消息。 系统的基本组件是旋转,固定头顺序存储器文件,关联存储器和一组缓冲存储单元。 从中央处理单元获得消息字的地址密钥。 旋转存储器包含存储在数字信号的相等长度段中的消息字的整个文件,并且每个都由密钥地址标识。 消息字可以由多个段组成,每个段具有相同的密钥地址,并由连续的段号进一步标识。 当顺序存储器旋转时,段的键地址与关联存储器中的键地址进行比较; 并且当发生匹配时,段被保留在缓冲存储器中。 由于获取了一个密钥地址的每个段,所以该段被传送到系统的输出。

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