Question

based on how binary information is entered or shifted out, shift registers are classified into ______ categories.
6 o
4 o
3 o
2 o
5 o

a 4 - bit shift register is storing the nibble 1101. its input is high (means: shift right). the nibble 1011 is waiting to be entered on the serial data - input line. after three clock pulses, the shift register is storing ______
1101 o
0111 o
0001 o
1110 o
none of the above o

how many methods of shifting of data are available?
2 o
5 o
6 o

Explanation:

1. Shift registers are classified into 4 categories based on how binary information is entered or shifted out: serial - in serial - out, serial - in parallel - out, parallel - in serial - out, and parallel - in parallel - out.
2. For a right - shifting 4 - bit shift register with initial value 1101 and new input 1011, after 3 clock pulses, the bits shift right. The first bit of the new input (1) enters, and the left - most bit is shifted out. So the register stores 0111.
3. There are 2 main methods of shifting data: logical shift and arithmetic shift.

Answer:

1. 4
2. 0111
3. 2