close Warning: Can't synchronize with repository "(default)" (Unsupported version control system "svn": /usr/lib/python2.7/dist-packages/libsvn/_core.so: failed to map segment from shared object: Cannot allocate memory). Look in the Trac log for more information.

Changes between Version 106 and Version 107 of wade/embedded


Ignore:
Timestamp:
Mar 26, 2010, 4:31:35 PM (16 years ago)
Author:
wade
Comment:

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  • wade/embedded

    v106 v107  
    139139 * Modbus：由 Modicon 公司所推出的通訊協定，常用在 PLC 的線路上。
    140140   * 自由軟體專案：libmodbus (https://launchpad.net/libmodbus 、 http://sourceforge.net/projects/libmodbus/)、freemodbus。
     141   * http://www.icpdas.com/products/PAC/i-8000/modbus_c.htm
    141142 * nibble：半位元。
    142143   * 二進制數碼，若以4 個位元為一組資料，稱為半位元組 (nibble)，若以8 個位元成為一組資料，稱為一個位元組(byte)。若以二個位元組(16 bit)，組成一組資料，稱為一個字元(word)。