3-46
A51.
16.
A52. Parallel.
A53. By clearing the register.
A54. Shift register.
A55. Serial.
A56. Requires more circuitry.
A57. Eight.
A58. Four.
A59. 22, or four times.
A60. Three to the left.
A61. Logic families.
A62. DTL (diode transistor logic).
A63. DIPs (dual inline packages).
A64. Compatible.