Dsm 8051 C language
Budget: $10 – $30 USD
1. T0 timer-counter circuit.
1.1.
When it provides a periodic signal with a frequency of 50Hz on pins (all eight) of port B of the DSM51 chip 8255. The high state is maintained for the time determined by percentage of the PWM filling parameter, adjustable in the range of 3 - 12% (the low state is maintained for the rest of the time).
1.2.
The TEST LED "echoes" the signal - it is on when the signal remains high, and it is off when the PWM signal goes low.
2. Multiplexed keyboard.
When it allows to change the value of the PWM fill parameter in the range from 030 (030 = 3%) to 120 (120 = 12%). The arrows change the value of the PWM fill parameter:
2.1.
Up / down in steps of 1.
2.2.
Right / left in steps of 10,
3. Multiplexed display.
3.1.
When it displays the current value of the PWM fill parameter.
1.1.
When it provides a periodic signal with a frequency of 50Hz on pins (all eight) of port B of the DSM51 chip 8255. The high state is maintained for the time determined by percentage of the PWM filling parameter, adjustable in the range of 3 - 12% (the low state is maintained for the rest of the time).
1.2.
The TEST LED "echoes" the signal - it is on when the signal remains high, and it is off when the PWM signal goes low.
2. Multiplexed keyboard.
When it allows to change the value of the PWM fill parameter in the range from 030 (030 = 3%) to 120 (120 = 12%). The arrows change the value of the PWM fill parameter:
2.1.
Up / down in steps of 1.
2.2.
Right / left in steps of 10,
3. Multiplexed display.
3.1.
When it displays the current value of the PWM fill parameter.