Revision Help !!!

[Graham Johnson]

Please could some very kind person out there help me with this
revision question.

Q)What problems can be encountered when using switches as inputs to a
microcomputer and how can these problems be overcome.

 

[Mark (UK)]

Hi!

Bounce. The CPU can read the switch so fast, that it may misread it at
the moment it's switching. Putting a 0.1 cap across the switch will
usually debounce it.

Yours, Mark.

Graham Johnson wrote:

Please could some very kind person out there help me with this
revision question.

Q)What problems can be encountered when using switches as inputs to a
microcomputer and how can these problems be overcome.