7 Threads found on edaboard.com: 89c51 Frequency Counter
hi sujeetha. the best approach will be to use the timers in the 89c51 as a counter. for example u can make use of two timers for this purpose. the first timer should act as a gating device to the second timer just like the conventional frequency counter. it can be made to enable the second timer at an interval of say one (...)
Professional Hardware and Electronics Design :: 11-18-2012 16:40 :: sequel :: Replies: 18 :: Views: 1144
sir can we make device for measuring 2ghz using 89c51
Microcontrollers :: 02-11-2011 11:45 :: harishwww :: Replies: 2 :: Views: 1861
hey can some one give me some hints how to detect rf signals to display frequency on lcd.
Microcontrollers :: 02-23-2010 16:33 :: santoshaxl :: Replies: 8 :: Views: 1188
frequency:- No. of pulses/1sec
With help of uC 89c51 you can measure only 0-5V pulses.
Therefor is your triangular wave have amplitude with in this range? if not then
convert triangular wave to square wave. then connect this to int1/INT0,
Configure timer2 for one second using 16 bit auto reload.
Before stating measurement init
Microcontrollers :: 10-09-2006 09:34 :: BABESH :: Replies: 3 :: Views: 984
hello,i m working on a project of measuring online freq using 89c51.Can u help in making the project repotr.plzz
Embedded Linux and Real-Time Operating Systems (RTOS) :: 04-11-2006 06:17 :: deepti.deeps :: Replies: 1 :: Views: 1476
can be quiet simple but still i want to ask what's the maximum frequency i can measure with 89c51 running on 24MHz crystal. i want to design a frequency meter using these basic two components...
Microcontrollers :: 10-07-2005 02:43 :: sush :: Replies: 1 :: Views: 688
Some body knows how to make a 89c51 MCU
to divide the frequency
Microcontrollers :: 03-06-2005 17:04 :: TheSniper :: Replies: 5 :: Views: 1172