Recent content by malsch

  1. M

    Keypad with latched switches

    Hi, i am using the 8051 and am having trouble with scanning a 2x8 keypad. This is due to the fact that the switches are latched ones (push to make switch). Also more than one switch can be pressed at one time. The code written, scans each column (the column which is being scanned is set to...
  2. M

    Help needed with Frequency Counter

    Hi, I need to design a simple frequency counter to measure the frequency of a square wave input (hence signal conditioning is not needed for now). I have understood the concept that the counter needs to count the input pulses for 1 second and display them on a 7-segment. My problem is how am i...
  3. M

    Alternative to state machines question

    yes i was thinking a microproccessor based system. 10x for your help
  4. M

    Alternative to state machines question

    I have designed a simple vending machine using Moore state machines which outputs sweets or the money if you insert more than the cost of the sweets. Now i have to criticize the use of a state machine when used in such a vending machine and have to suggest and alternative implementation which...
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