Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I want to build a circuit to get the signals state like in the timing diagram above. I have tried using a d flip flop connect to WR signal but i can get the OBF signal go low. I don't know how to make the out put buffer full signal go low by rising edge of WR and reset it to high by rising edge...
Thanks for your kindness. I build this circuit in order to illustrate handshaking for parallel communication but i not sure when i read the port p2 to get the right data the first 89c51 transfers. Base on your reply if i connect the wr signal of first microcontroller to int0 of second...
I am trying to transfer 1 byte between 2 89c51 through parallel port. However, i don't know how to get the right value in port 2. I used MOVX command but i don't know the exactly time i need to get the right data. Is this when WR signal go low or ALE go low? Please help me. I have attached the...
I have some problems with my little project. I have made zero crossing detector circuit work well and use atmega8 to create a square ware base on the output of this circuit like in the picture below. However when i try to pass the signal to light control block ( with moc3021) errors appeared...
i have coded a program to collect temperature from sensor ds18b20 but when i use proteus to simulate it . The lcd still remain 0 degree. Please help me. I have a test on next week :sad:
i config like that in proteus
program i have used
// LCD module connections
sbit LCD_RS at RD0_bit;
sbit...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
