Gray Code Circuit


Posted on Feb 7, 2014

Gray Code. A positional binary number notation in which any two numbers whose difference is one is represented by expressions that are the same except in one place and differ by only one unit in that place. A code composed of a number of bits assigned in such a way that only one bit changes at each increment, or decrement. A binary code in which consecutive decimal numbers are represented by


Gray Code Circuit
Click here to download the full size of the above Circuit.

binary expressions that differ in the state of one, and only one, one bit. Circuit to convert Gray Code to Binary coded decimal [BCD]. Using standard glue logic ICs; note the circuit works regardless of the particular logic family used, as long as those families will communicate with each other. Manufacturers of Standard Logic The schematic shows a 4-bit converter circuit, but more XOR gates may be added to produce a converter of any number of bits. A 7486 Quadruple 2-Input Exclusive-OR Gate [74xx86] could be used to implement the Gray code circuit above. There are no Gray code specific converter ICs. A Binary to Gray Code converter can also be made using the same 7486 XOR gates. Instead of feeding the input of the XOR gate from the output of the lower one use its input line. For example XOR-3 has an input tied to output line 2sup3 of XOR-4, tie that input line to Gsup3 instead. So XOR gate 3 would have an input G2 and G3. This next page shows a Excess-3 Gray Code to Decimal Converter, also refer to the BCD to Decimal Converter or decoder. The circuit can either be made with the chips shown or with the IC that contains the circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    PC Printer Port Controls I-V Curve Tracer
    2 LED flasher with two 2N3904 transistors
    Quad op amp generates 4 waveforms
    Digitally-controlled oscillator
    Auto Alarm
    Arduino Barometric Pressure WebServer
    12V Speed Controller/Dimmer
    Simple Square Wave Generator with 7400
    NAND gate S-R flip-flop
    Vacuum Tube Amplifier Pioneer SM-83 Restoration
    Micro Wireless Monitor FM FM transmitter circuit
    Loudness control circuit



    Top