prompt+1

//Prompt #1 3/24/10//


 * Many electronic devices use certain technology and signals. Here are a few of them. An analog signal is different from a digital signal because it varies smoothly and a digital signal varies by changes and jumps in steps. ** A semiconductor is useful in electronic devices because unlike a regular conductor, its electricity can be controlled by adding impurities. A diode is like a one way street because it only allows electricity to flow in one direction. A transistor is a solid state component that can be used to amplify signals in an electric circuit. It is also used as an electronic switch.

These electronic devices can be useful in a space mission to Mars. The analog signal could be used to smoothly record the temperature on Mars and the digital signal could be used in the computer on the ship. The diode could be used with the semiconductor on the ship to switch the current from AC to DC. Transistors and Diodes would be necessary in building the ship because it would need circuits and circuits are made up of thousands of tiny transistors and diodes.