This is used to show & design how an external keyboard can be interfaced to the PIC controller, While designing dedicated keypads. The keyboard has 16 keys placed in 4x4 array. This trainer provides a means to understand what is keyboard scanning, and how to achieve this. The user has to write the operating program to show how a calculator or a dedicated keyboard is accessed, and programmed to perform, various input output operations or, arithmetic functions like addition, subtraction, multiplication, division programs can be executed. This interface also is used to design any dedicated system keypad. For example, keyboard for microwave oven. Specifications: - 16 robust keys are used.
- Keys are arranged in 4 X 4 matrix
- Status of keys are logged on an 8 BIT port.
- An external power supply 5V DC @250mA is required Model SP5 is recommended.
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