A Coggle Diagram about some machines can change electrical energy in order to do work., Information can be stored in the computers memmory unit it is needed., power plants sen electrical energy to homes by means of alternating current., an integrated circuit is an entire circuit that has many components on a single semiconductor. , One of the electronic communication devices was the telegraph., Electronic communications devices, including the telegraph send information by using signals,, you can change the conductivity of a semiconductor through dopping , is the addition of impurity to a semiconductor., a digital signal is a signal that is represented as a sequence of separated values., Radio waves are one kind of EM wave. Radio stations use waves to carry signals that represented sound., A computer is an electronic device that performs tasks following instructions given to it., A microprocessor is a single semiconductor chip that can acept data and instructions., Different parts of computer do diffent jobs. Hardware is the parts or pieces of equipment that make up a computer. and A analog signal is a signal whose properties change without a break or jump between values.