AT89C2051/4051 Scanning 7 Segment Display and Keypad
#AT89C2051
#AT89C4051
#7-segment display
#keypad
#scanning
#embedded
#input interface
#display driver
#8051 microcontroller
#user interface
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AT89C4051 as RTC
It's a digital clock which makes use of AT89C4051 to work as a real-time clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7 to pin 14 of LCD). As...
Real Time Clock Using AT89C4051
Port 1 of the controller (AT89C4051) is utilized as the data lines for the LCD (from pin 7 to pin 14 of the LCD). A 16 x 2 line LCD display is employed. The first line displays "DAY" and "DATE,"...
Power Supply for the 8051 Microcontroller
The power supply section is the important one. It should deliver constant output regulated power supply for successful working of the project. A 0-12V/500 mA transformer is used for this purpose. The primary of this transformer is connected in to...
keypad interfacing connection diagram
Learn to interface a 4x4 matrix keypad with AVR and 8051 microcontrollers, and program these microcontrollers in C and assembly language for the keypad matrix.
The 4x4 matrix keypad is a popular input device used in various electronic applications, allowing users...
Digital event Counter AT89C2051
Digital visitor counter is a reliable circuit that takes over the task of counting Number of Persons/ Visitors in the Room very Accurately. When somebody enters into the Room then the Counter is Incremented by one and when any one...
Four-Digit Keypad-Operated Switch
Speaker relay delay controlling circuit for audio amplifier
The speaker relay delay controlling circuit is designed to manage the connection between an audio amplifier and loudspeakers, ensuring that the speakers are only activated after a predetermined delay. This delay is crucial...
A 4-Digit Keypad Controlled Switch circuit
This is a universal version of the four-digit alarm control keypad. The design has been modified to free up the relay contacts, allowing the circuit to function as a general-purpose switch. A single pole changeover (SPCO) or single pole double...
serial eeprom interfacing at24c08 with at89c2051
Microchip has addressed the need for memory solutions with a comprehensive range of serial EEPROMs, available in various memory configurations and utilizing standard 2- or 3-wire communication protocols. The following assembly code outlines the procedure for writing and reading data...
Digital code Lock with AT89C2051
Security is a prime concern in our day-to-day life. Everyone wants to be as much secure as possible. An access control for doors forms a vital link in a security chain. The microcontroller based digital lock for Doors is an...