Chapter 1 Notes

Chapter 1 Notes - Chapter 1 Notes Computers- machines that...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 1 Notes Computers - machines that perform very simple tasks according to specific instructions Program - a set of instructions for a computer to follow Software - a collection of programs Hardware - the physical machines that make up a computer Computer is made up of four main parts: the input devices, the output devices, the central processing unit, and the memory Input device - allows a person to communicate info to comp (keyboard, mouse, microphone) Output device - allows comp to communicate to person (display screen, monitor, printer, audio speakers) Terminal (video display terminal)- keyboard and monitor Memory - to store input and scratch paper for calculations; made up of a long list of numbered locations called words (memory locations); can be unlimited (the more memory the more sophisticated the device) Word - string of zeros and ones All locations have the same number of ones and zeros (most common is 16, 32, 64 digits) Bit - a digit that assumes only the values zero or one (32bit machine= each memory location in your computer can hold 32 bits/digits, each either one or zero) Using ones and zeros- comp must use binary notation arithmetic, comp has to interpret these ones and zeros into letters or instructions using codes (each item has a diff code) Main memory - a temp memory that is used only while the comp is actually
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chapter 1 Notes - Chapter 1 Notes Computers- machines that...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online