Interfacing a Calculator Keypad as Password Input with 8051 Microcontroller

Report a violation of the law

Reply | New topic

#1 21662147 13 May 2012 22:01

Pradip Neupane Pradip Neupane

Anonymous

Post #1
21662147 13 May 2012 22:01

I have not found the exact circuit in internet. I am just getting difficulty in my project.
I am using calculator as a keyboard to enter the password.
ADVERTISEMENT
#2 21662148 14 May 2012 00:40

Prakash Rajolli Prakash Rajolli

Anonymous

Post #2
21662148 14 May 2012 00:40

Kindly elaborate more.

Do you asking for hardware design?

-Prakash
ADVERTISEMENT
#3 21662149 14 May 2012 11:57

Pradip Neupane Pradip Neupane

Anonymous

Post #3
21662149 14 May 2012 11:57

yes, I am asking for the hardware design. The digit that we enter in calculator act as the password. That password compare with the internal digit of store in processor memory ,thus necessary work can be done through output signal.
#4 21662150 31 May 2012 15:56

Bruce Brodsky Bruce Brodsky

Anonymous

Post #4
21662150 31 May 2012 15:56

Are you just using the kepad FROM a calculator? Otherwise the calculator wound have to have an output to use. The LED display signals could be used but that would be very comlicated because the digits are typically multiplexed,
Create an account, log in here. You will receive points by participating in discussions.
Join this discussion.

Install Elektroda application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

Reply | New topic

Report a violation of the law

Interfacing a Calculator Keypad as Password Input with 8051 Microcontroller

Didn't find an answer? Ask Artificial Intelligence