| 摘要 |
An encoder system provides inexpensive means for reducing the number of output connections from a keyboard, wherein each character key provides only two output signals. Each of the output signals from a character key is connected to only one of the inputs of the encoder system for the transmission of information thereto, and two or more additional outputs from shift keys are transmitted to separate shift inputs of the encoder representing, for example, alphabetical and numeric characters, respectively. One depression of any two character keys causes a digital default signal and the encoder treats the condition as if no keys were depressed. The output from the encoder is a binary signal which is transmitted to other peripheral equipment such as the central processor or memory buffer of a computer system.
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