Introduction to data logic

                              data logic                                      

   A digital computer stores data in terms of numbers and proceeds in diffrent steps from one state to the next. The states of a digital computer typically involve binary digits (0 and 1) which may take the form of the presence or absence of magnetic markers in a storage medium , on-off switches or relays. In digital computers, even letters, words and whole texts are represented digitally in (o1) form.

     Digital Logic is the basis of electronic systems, such as cell phones and computers . Digital Logic is rooted in binary code, a series of zeroes and ones each having an opposite value. This system facilitates the design of electronic circuits that convey information, including logic gates. Digital Logic gate functions include and, or and not. The value system translates input signals into specific output. Digital Logic facilitates computing, robotics and other electronic applications. 

     All digital systems from the smallest to largest run on a 2-valued system (also called Binary system). So a mechanism is needed to represent the two values. This is typically accomplished with a switch that can be on or off. In the early days, mechanical switches were used, followed by vacuum tubes as switches. Today we use transistors that can be configured to approximate the switch on and off modes. Transistors are fast, inexpensive and small.

Transistor overview (the invention that makes today’s automation possible) 

     1)The transistor, invented by three scientists at the Bell Laboratories in 1947, rapidly replaced the vacuum tube as an electronic signal regulator.

   2) Transistors are the basic elements in integrated circuits (ICs). An IC consists of a very large number of transistors interconnected with circuitry and packaged into a single silicon microchip or "chip." A typical processor chip has many millions of transistors. 

   3) A transistor is developed based on semiconductor material characteristic. Semiconductor material used basically as a switch as shown below: 

The more explanation will be be on this blog soon.

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