Investigation

**digital logic**: Digital logic is a system used on computers that is based on simple number values such as 1 and 0 that produces input and output operations. Digital Logic is used in a variety of things, such as cell phones, GPS systems and computers
 * Definitions**

**Logic Gates**:Logic gates are a device that process digital operations.They process signals which represent true or false. Normally the positive supply voltage +Vs represents true and 0V represents false. They are also other terms used like not, and or.



Truth Tables: Is a mathematicaltableused in logic that is connected to the boolean algebra. They are usedto compute the functional values of logical expressions. Atruth table is composed of one column for each input variable (for example, A and B), and one final column for all of the possible results of the operation that the table is meant to represent

** Integrated Circuit : ** An integrated circuit is small chip that has many functions. These extremely small electronics can perform calculations and store data using either digital or analog technology. The integrated circuit or IC used digital logic.

** LED: ** or light emitting diode is a semi-conductor of light source. They are used on lamps and many other devices. When electricity passes through it, it immediately lights up, and it is usually red. They are good for displaying images because they can be relatively small, and they do not burn out. **Breadboard:** is used to make temporary circuits that its purpose is to test or try an idea. It is easy to change their connections or change components and no material will be modified so it can be re-used. Breadboards have many tiny holes in a grid. The leads of most components can be pushed straight into the holes. ** Breadboard jumpers ** **:** are little cables used to connect devices 