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Decade counter – modulus ten counter (counts through ten states). Up/down counter – counts up and down, as directed by a control input, or by the use of separate "up" and "down" clocks. Ring counter – formed by a "circular" shift register. Johnson counter – a twisted ring counter. Gray-code counter – outputs a sequence of Gray codes.
synchronous presettable 4-bit up/down decade counter 16 DM74LS168: 74x169 1 synchronous presettable 4-bit up/down binary counter 16 SN74LS169B: 74x170 1 16-bit register file (4x4) open-collector 16 SN74170: 74x171 4 quad D flip-flops, clear 16 SN74LS171: 74x172 1 16-bit multiple port register file (8x2) three-state: 24 SN74172: 74x173 4
The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...
40110 – Up/down decade counter with 7-segment display decoder with 25 mA output drivers. 40192 – Up/down decade counter with 4-bit BCD preset. 40193 – Up/down binary counter with 4-bit binary preset. Decoders. 4028 – 4-bit BCD to 10-output decoder (can be used as 3-bit binary to 8-output decoder)
Like the 68HC11, the 68HC12 has two 8-bit accumulators A and B (referred to as a single 16-bit accumulator, D, when A & B are cascaded so as to allow for operations involving 16 bits), two 16-bit registers X and Y, a 16-bit program counter, a 16-bit stack pointer and an 8-bit Condition Code Register. Unlike the 68HC11 the processor has 16bit ...
The circuit consists of an up-down counter with the comparator controlling the direction of the count. The analog output of the DAC is compared with the analog input. If the input is greater than the DAC output signal, the output of the comparator goes high and the counter is caused to count up. The tracking ADC has the advantage of being simple.
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The counter itself must count in Gray code, or if the counter runs in binary then the output value from the counter must be reclocked after it has been converted to Gray code, because when a value is converted from binary to Gray code, [nb 1] it is possible that differences in the arrival times of the binary data bits into the binary-to-Gray ...