Shift registers
What is the primary function of a shift register?
To store and shift digital data.
How is data input into a serial in register.
What is all bits at once.
Which type of shift registers shifts data in both ways.
A bidirectional shift register.
What type of register would you use to convert data from a micro controller to control 8 LEDs.
What is a serial in parallel out register.
In which direction does a right shift register move the bits?
From left to right
Which pin receives data in a serial in register
Serial input pin.
What signal typically triggers a parallel load?
The load or enable signal.
What is a ring counter a special type of?
Which register configuration is used in UART communication?
What is serial in serial out
Name one common application of shift registers in electronics.
Serial to parallel conversion.
How many clock cycles are needed to load 8 bits into a 8 bit serial in register.
8
Which register type allows all bits to be loaded at the same time then shifted.
A parallel in serial out shift register.
Which shift registers allows both serial and parallel inputs and outputs.
A universal shift register.
How do shift registers help expand the number of output pins on a microcontroller
By daisy-chaining registers for more outputs
What is the output of a 4-bit shift register initially loaded with 1001 after one shift right.
0100
What type of register allows serial data input and parallel data output
A serial in parallel out register.
Why are parallel load registers faster than serial load ones for large data sets.
All the bits are loaded at the same time.
What is the difference of a Johnson counter and a ring counter.
It inverts the output before feeding it back.
What is a real world example of a device using parallel in serial out shift registers.
A keyboard encoder.
What is necessary to control the timing of the shift register.
The clock signal
What happens to the first bit in a serial in register when a new bit is shifted in and the register is full.
What feature must a register have to support both parallel and serial loading.
A mode control or multiplexed input lines.
4
Why would someone chose a universal shift registers in a complex system.