NAND as Universal Gate

By combination of  NAND Gate we can construct AND, OR, NOT (basic logic gates) so we call NAND as Universal Gate. This is also true for NOR Gate. But we prefer NAND gate over NOR because of low logic effort and delay. For input level (High and Low) I have used 2 way...

Logic Gates

Logic gates are the building blocks of digital technology. It is a mechanical, optical, or electronic system that performs a logical operation on an input signal. Truth tables are used to help show the function of a logic...

Electronic Eye

Electronic eye has much use in this electronic age, also Known as magic eye. It can be used as an automatic guest indicator at the door, if fitted on the bottom of the door entrance. Once it is installed at the door there is no need to install a call bell. It can also be used at homes or in banks as a burglar alarm.