This is circuit for interfacing I/O keypad and LCD that can study in laboratory for student to experience interfacing basic I/O devices to the HCS12 microcontroller mounted on the CML12S-DP256 development board. The keypad that using in this circuit is a standard 4 X 4 matrix keypad with 4 rows and 4 columns. This is [...]
This is design for temperature sensor that is based ATMega 8. LM35 is using for sensing the temperature. This IC is cheaper than the price of this component is also easy to be in the market. This is the figure of the circuit. LM35 have 10mV voltage change per 1 degree centigrade. LM35, in principle, [...]
This circuit is intended to show a general solution for implementation a low cost ADC and a 2-way multiplexed LCD using COP840C 8-bit microcontroller. The implementation is demonstrated by means of a digital personal scale. Details and function of the weight sensor itself are not covered in this article. Also the algorithms used to calculate [...]
