hazanohazizul

74AS can be replaced by 74HC because i already asked the author of the crkt.... he say that the 74AS is a fast and high frequency ic but 74HC is higher to... there was only a little bit different in they frequency respons..

the 74as series can be replaced with the 74hc but from what i know the 74hc is a CMOS type, is there 74hc in TTL type? i want to ask something? what is the major different between TTL and CMOS IC, the different that we can see from the IC... exactly like it shape or marking? I hope you can help me... ???

i think it not work by magic. Ok, this radar works with the doppler effect. It converts variation of frequency into frequency and it measures this frequency to display the speed. The variation of the frequency of the modulation is created by the impact of vehicle against the wave. More the speed of the vehicle is high, more the variation of the frequency will be high. At the speed of the light, the rythm of variation of frequency is the same as the modulated frequency. You can determine the output frequency if you know the modulated frequency value and speed of the car. the 74as series can be replaced with the 74hc but from what i know the 74hc is a CMOS type, is there 74hc in TTL type? i want to ask something? what is the major different between TTL and CMOS IC, the different that we can see from the IC... exactly like it shape or marking? I hope you can help me... :)

laser diode it is not for transmitted but it for receiving a spot of light or a FC frequency

Hi.... Do you know what kind of Laser Diode and Laser LED that been used in this project.... Can you give me the part number please.....

hai.... can someone help me, i was during the digital radar speedometer project but i don't know what kind of Laser Diode and Laser LED that been used, can someone give me a part number PLEASE..... :)