A set of vocabulary from Chapter 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Computer System | The computer and other support devices (peripheral devices) that work as a tem to (1)receive information as the user inputs it, (2) process that information per the directions that the user defines, (3) output the information in a usable format.
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| Arithmetic Logic Unit (ALU) | The sector of the CPU that performs the mathematical calculations that are required in many data processing programs.
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| Memory Unit | Allows storage of information.
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| Random Access Memory (RAM) | Temporary Memory that is designed to hold new data and is available only while the computer is turned on.
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| Read-Only Memory (ROM) | Permanent internal memory inside the system, is inaccessible by the user, and is used to store the instructions that are installed or programmed at the manufacturer.
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| Processor Speed | Conveys how fast data can be moved in and out of the memory. Measured in megahertz or gigahertz.
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| Cache | Provides a temporary storage area that provides a quick access to information.
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| Peripheral Devices | Used to (1) input the information, (2) output the information into a form that is easily raed by the user, or (3) store the information for later use.
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| Input Devices | Allow the input of data into the computer. Examples: keyboards, mice, scanners, Web cameras, etc.
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| Optical Character Recognition (OCR) | Used to convert text via scanner.
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| Sound Card | Allows the input of sound into the computer.
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| Classroom Response System (Clicker) | A handheld device that resembles a TV remote that allows students to respond to questions posed by the instructor.
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| Resolution | The clarity of the image that is seen on the computer screen.
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| Pixel | A single colored square on the screen.
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| Dots Per Inch (DPI) | Measures the resolution of printers.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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