30-01-2012, 01:57 PM
digital code lock
[attachment=16830]
.LCD:-
LCD is finding wide spread use replacing LEDs (seven segment LEDs or other multi segment LEDs)
A model described here is for its low price and great possibilities most frequently used in practice. It is based on the microcontroller and can display messages in two lines with 16 characters each
Features
Diffused Junction
Low Forward Voltage Drop A
High Current Capability
High Reliability
High Surge Current Capability B
Ideal for Printed Circuit Boards
voltage regulator
The MC78XX series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications.
4 Matrix Keyboard
4*4 matrix keyboard is used to enter password and to control devices, 4*4 matrix keyboard requires only 8 I/O lines, where as the line keyboard requires 16 I/O lines
digital code lock
[attachment=16830]
.LCD:-
LCD is finding wide spread use replacing LEDs (seven segment LEDs or other multi segment LEDs)
A model described here is for its low price and great possibilities most frequently used in practice. It is based on the microcontroller and can display messages in two lines with 16 characters each
Features
Diffused Junction
Low Forward Voltage Drop A
High Current Capability
High Reliability
High Surge Current Capability B
Ideal for Printed Circuit Boards
voltage regulator
The MC78XX series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications.
4 Matrix Keyboard
4*4 matrix keyboard is used to enter password and to control devices, 4*4 matrix keyboard requires only 8 I/O lines, where as the line keyboard requires 16 I/O lines
