Digital Electronics-Shift Registers
Digital Electronics-Shift Registers
51. When the output of a tristate shift register is disabled, the output level is placed in a:
- float state
- LOW state
- high-impedance state
- float or high-impedance state
53. There are several ways to construct a stepper motor to achieve digitally controlled stepping action. One possibility is to construct four stator coils set up as four pole pairs, each 45° apart and using three ferromagnetic pairs spaced 60° apart.
- TRUE
- FALSE
54. A parallel load operation is asynchronous, so it is not dependent on the clock.
- TRUE
- FALSE
55. A ferromagnetic material is one that forms a resistance to magnetic fields.
- TRUE
- FALSE
56. A counter has a specified sequence of states, but a shift register does not.
- TRUE
- FALSE
57. In a 74164 8-bit shift register, in order for the parallel data output to be synchronously loaded on the negative clock edge, the parallel enable input is LOW.
- TRUE
- FALSE
58. Practically every possible load, shift, and conversion operation is available in a shift register IC.
- TRUE
- FALSE
59. Using separate serial inputs for shifting left or shifting right is a major difference between the 74194 and other shift registers.
- TRUE
- FALSE