Here is a project called ‘Digital Code Lock using AT89C2051′. LCD is used for display and a keyboard is used to input  the keys. This project source code is written in C. Both the C files and hex files are given for download. A Brief Description: This a simple project with efficient hacking prevention...

ABSTRACT A simple and inexpensive absorption technique for determination of calcium ion in urine samples is developed, comprising a light emitting diode (650 nm) as the light source and photodiode as the detector with AT89C51RD2 microcontroller. The design of the system and details of interface, calibration,...

ABSTRACT In present days the use of computer is growing rapidly with the boom in IT field. There is a great impact of IT field. And day by day, the need for computations with great speed and accuracy also increased the usage of computers. Computer became a basic amenity for students. Students are using...