16. A 74HC195 4-bit parallel access shift register can be used for ________.
(a) serial in/serial out operation
(b) serial in/parallel out operation
(c) parallel in/serial out operation
(d) all of the above
17. A bidirectional 4-bit shift register is storing the nibble 1110. Its input is LOW. The nibble 0111 is waiting to be entered on the serial data-input line. After two clock pulses, the shift register is storing ________.
(a) 1110
(b) 0111
(c) 1000
(d) 1001
18. In a parallel in/parallel out shift register, D0 = 1, D1 = 1, D2 = 1, and D3 = 0. After three clock pulses, the data outputs are ________.
(a) 1110
(b) 0001
(c) 1100
(d) 1000
19. In a 4-bit Johnson counter sequence there are a total of how many states, or bit patterns?
(a) 1
(b) 2
(c) 4
(d) 8
20. In a 6-bit Johnson counter sequence there are a total of how many states, or bit patterns?
(a) 2
(b) 6
(c) 12
(d) 24
Related Posts
Shift Registers » Exercise - 136. Assume a 4-bit parallel in/serial out shift register is loaded with a binary number. How many clock pulses are required after the parallel load has occurred before the first bit in the sequence appears on the serial output line? (a) 0 (b) 1 (c) 2 (d) 3- Shift Registers » Exercise - 130. A serial in/parallel out, 4-bit shift register initially contains all 1s. The data nibble 0111 is waiting to enter. After four clock pulses, the register contains ________. (a) 0000 (b) 1111 (c) 0111 (d) 1000
- Shift Registers » Exercise - 147. A 4-bit shift register that receives 4 bits of parallel data will shift to the ________ by ________ position(s) for each clock pulse. (a) right, one (b) right, two (c) left, one (d) left, three
- 5555555555 76. A 4-bit PISO shift register that receives 4 bits of parallel data will shift to the ________ by ________ position(s) for each clock pulse. (a) right, one (b) right, two (c) left, one (d) left, three
- Counters » Exercise - 164. What type of device is shown below? (a) 4-bit bidirectional universal shift register (b) Parallel in/parallel out shift register with bidirectional data flow (c) 2-way parallel in/serial out bidirectional register (d) 2-bit serial in/4-bit parallel out bidirectional shift register