| 5a. |
They are inputs and need to be conditioned. |
| 5b. |
The 100kohm resistor allows the injection of a high signal if
you want to do so. |
| 6. |
The range of a four digit binary number goes from 0000 [decimal 0]
is 1111 [decimal 15].
This represents 16 numbers. |
| 7. |
The 4511 counts only to decimal 9 [1001]. |
| 8. |
0111 is 4 + 2 + 1 = 7 |
| 9a. |
LT is Lamptest. It is held high. All output go high when it is set
low. |
| 9b. |
Blanking, at pin 4, is held high. for normal operation. All outputs
go low when it is set low. |
| 9c. |
Store at pin 5 is held low. Set high, it acts like the enable on the
4017, freezing the count. |
