| 摘要 |
A circuit of serial transmission of dependent display unit containing a line receiver, display presentation system with commands' register, separator and synchronisation detector, and line transmitter with combination circuit, bit and byte counter, D flip-flops, NAND gate, and inverter characterized in that the line transmitter (1) is connected to the combination circuit (2) to which a keyboard is connected with the use of keyboard's data signals (4) as well as the bit and byte counter (5), separator and synchronisation detector (6) are connected, and the bit and byte counter (5) is connected to the commands' register (8) of the display presentation system (7) and the clock input (T) of the first D flip-flop (9), the outputs (Q and -Q) of which are also connected to the combination set (2) and the input (D) is connected to the output of gate (NAND), one of the inputs of which is connected to not negated output (Q) of the first trigger (9) and the second input of gate (NAND) is connected, with the use of inverter, to the not negated output (Q) of the second trigger (10), and its timing (T) and setting (-P) outputs are connected to the keyboard with the use of signal (STROB-11, REPEAD-12), and its output (D) is connected to permanent logical one.<IMAGE>
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