| ??? 05/20/06 20:16 Read: times |
#116742 - ??? Responding to: ???'s previous message |
Karim Fallahzadeh said:
if it is posible to use a potentionmeter or similar devices for input to an 8051/8052 without using of an ADC What do you actually want to achieve with it? What do you consider to be a "similar device"? You understand that the whole point of digital electronics is that everything can only ever be in one of two states? So you can use a potentiometer, and a comparator to determine whether it is greater than or less than some setting. You can connect a variable voltage to a digital input - it will give a '1' when the voltage is in the guaranteed '1' range, a '0' when the voltage is in the guaranteed '0' range, and something indeterminate when it's in between! or adjusting a LED lamination and its color Without using of a DAC IC? I presume you mean adjusting the brightness of a LED? You can use PWM (Pulse-Width Modulation) to do this. You cannot adjust the colour of an LED. Howver, some devices contain Red, Green, and Blue LEDs in a single package - you can adjust the overall colour by adjusting the relative brightnesses of the 3 individual colours |
| Topic | Author | Date |
| without adc | 01/01/70 00:00 | |
| ??? | 01/01/70 00:00 | |
| Yes, sort off | 01/01/70 00:00 | |
| slow inputs | 01/01/70 00:00 | |
| low cast (low speed ) ADC IC | 01/01/70 00:00 | |
| Low cost ADCs | 01/01/70 00:00 | |
| addjusting color also is posible whith . | 01/01/70 00:00 | |
| Just how cheap do you have to be? | 01/01/70 00:00 | |
| Specification! | 01/01/70 00:00 | |
blinkers | 01/01/70 00:00 | |
| Try this | 01/01/70 00:00 | |
| Thank you very much robert!!!!! | 01/01/70 00:00 | |
| a hint | 01/01/70 00:00 | |
| Beware! | 01/01/70 00:00 |