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Clocked R-S Flip Flop. D flip flop: List R-S but it ensures that inputs aren’t incompatible Stores whatever Data is on “D”. T or Toggle flip flop Input to T State changes on clock pulse. Buffer or shift register Stores 4 bits of data Combine flip flops to get a shift register
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D flip flop: • List R-S but it ensures that inputs aren’t incompatible • Stores whatever Data is on “D”
T or Toggle flip flop • Input to T • State changes on clock pulse
Buffer or shift register • Stores 4 bits of data • Combine flip flops to get a shift register • Data moves down the line on each clock • Or a counter:
An actual data sheet • Operating parameters • Power • Voltage • Different packages • DIP = dual inline pin • Surface mount is too small
Octal Decoder • Input binary • Selects an octal output
Data selector • 4 bit binary address selects which data line transmits to output
7 segment display driver • For homework • Input is BCD • Output creates the correct combination of LED elements to form the digit