The universal shift register is a type of sequential logic circuit that is used for the storage or transfer of data in the form of binary numbers and then "shifts" the data out once every clock cycle.
siso,pipo.sipo.piso
Shift registers contain multiple "flip flops" that can be set to represent a bit value (0 or 1). These values can be retrieved later and so the registers can function as memory.
shift registers can be used in CDMA(code division multiple access) in communication.
Mostly used in counters and shift registers.
M. Ozdemir has written: 'Quaternary feedback shift registers'
They are commonly used to implement state machines and shift registers.
There are several types of shift registers: PISO: parallel-in serial-out shift registers such as the 7495(?), 74HC165, 74HC166 serial parallel counter load a one and shift it out serially bingo sequential pulses SIPO: serial-in parallel-out shift registers such as the 74HC595, 74HC4094, TPIC6595, TLC5925. Typically data is shifted into the register one bit at a time through "the" input pin. Most "POV clocks" and "POV displays" use such chips to drive the spinning LEDs. Most such chips can be wired up to "shift left", or they can be wired up to "shift right", but once wired up can only do one or the other. bidirectional SIPO: bidirectional serial-in parallel-out shift registers. Once wired up, an external control line can dynamically switch it from "shift left" -- feeding in a new bit on the "least significant bit input pin" -- and at some other time it can "shift right" -- feeding in a new bit on the "most significant bit input pin". "universal" shift registers, such as the 74AC299, can do any of the above (at different times): output the current state of the register in parallel, shift left, shift right, and load the new state of the register in parallel.
Johnson counter is a ring counter, which is a type of counter composed of a circular shift register. Johnson counter provides many shift registers and ring counters.
Timing sequences can be generated using shift registers by configuring them to shift data in a specific pattern or frequency. By clocking the shift register, bits can be shifted in and out, creating a sequence based on the initial input. Additional logic gates can be used to manipulate the output, enabling the generation of specific timing signals or pulse widths. This method allows for flexible timing sequences that can be adjusted by changing the input data or the clock frequency.
Microprocessor consists of different types of registers. They special purpose registers, general purpose registers, address registers, floating point registers and constant registers.
From the excitation table of D flipflop , clear that D flipflop act as a buffer. It also used to make shift registers.
One of the most common uses of a shift register is to convert between serial and parallel interfaces. Shift registers can be used also as pulse extenders. For -phase clock generation, a SR also functions as a divide-by- and requires a voltage-controlled oscillator with times higher frequency. shift registers can also be used to handle data processing