Computer Hardware The visible, touchable parts of the computer
Input Data that enters an information system
Input Device Units that gather information and transform that information into a series of electronic signals for the computer
Types of Input Devices Keyboard ▫ An input device which sends data to the processor Mouse ▫ An input device that allows the user to manipulate objects on the screen by moving the device along the surface of a desk Other types of input devices include: ▫ Microphone, Scanner, and Touch Screen Can you think of any other input devices?
Types of Keys on the Keyboard Alphabetic Keys ▫ Letters a – z on the keyboard Numeric Keys ▫ Numbers 0 – 9 on the keyboard Function Keys ▫ Keys that allow you to do special things like print Manipulative/Modifier Keys ▫ Shift, Caps Lock, Tab, Return, Backspace, Alternate, Control, Windows, etc.
Processing Manipulating raw data according to instructions Central Processing Unit (CPU) – The “brains” of the computer.
Storage The ability of a computer to keep data when the power to the computer is turned off.
Storage Device A storage process that holds data outside of the processing unit
Types of Storage Devices USB Flash Drive ▫ A portable storage device that plugs into a USB port in front or back of the computer. CD/DVD ▫ Plastic disk written on with laser beams to store data CD/DVD Drive ▫ Where a computer reads or writes to a “compact disk” (CD or DVD)
More types of Storage Devices Hard Drive ▫ Primary device used to store information ▫ Magnetically stores data on a stack of rotating disks called platters. ▫ May be internal or external Other types of storage devices include: ▫ Memory Card and online storage sites Can you think of any other types of storage devices?
Output Useful information that exits in an information system
Output Device A means of viewing processed data
Types of Output Devices Monitor ▫ Screen – Most commonly used video display Printer ▫ Output device that produces a hard copy of information in a computer document or screen Other types of output devices include: ▫ Speakers, Headphones, and Projector Can you think of some other output devices?
Computer Hardware in Plain English To view this video, please access the PowerPoint from the shared drive at school.
Computer Software in Plain English To view this video, please access the PowerPoint from the shared drive at school.
Software Terms Software/program ▫ Written instructions for the computer designed to solve specific problems or for specific uses (Example: Word processing, spreadsheets, graphic design, etc.) Application Software ▫ Programs written to complete specific tasks such as word processing, spreadsheets, or games Word Processing ▫ The process of editing and formatting words MS Word ▫ A type of application software for word processing
Operating System Terms Operating System software ▫ Master controller for all activities that take place within a computer MS Windows/Mac OS ▫ Types of system software ▫ They run the basic operations of your computer.
Important terms to know Return/Enter ▫ A manipulative key which advances the cursor Login/Logoff ▫ The means of entering and exiting a computer system Cursor ▫ The position indicator Prompt ▫ A message from the computer that requires a response from the user Default ▫ Settings used unless another option is chosen
Types of Spacing in a Document Single Space (SS) ▫ 0 blank lines ▫ 1 enter or typing on every available line Double Space (DS) ▫ 1 blank line, 2 enters or typing on every other available line Triple Space (TS) ▫ 2 blank lines, 3 enters or leaving two blank lines between each line of writing Quadruple Space (QS) ▫ 3 blank lines, 4 enters or leaving 3 blank lines between each line of writing
Technique Feet placed for balance Body centered to the “H” Key with elbows at sides Sit with back straight and hips in the back of the chair Curve fingers over homerow Wrists off the keyboard and table Eyes on the printed copy Key by touch with correct finger Sit a hand-span from the table edge
Using Wordwrap Manual Return (also called a Hard Return) ▫ When the computer operator physically presses the return or enter key Automatic Return (also called a Soft Return or Wordwrap) ▫ When the computer makes the decision to start a new line ▫ The feature of a word processing software that allows the computer to return for you at the end of each line.