Task 1 1.ComputerPeripheral Devices Any device connected internally or externally to a computer and used in the transfer of data to or from a computer. A personal computer (PC) or workstation processes information. Data (unprocessed information) must get into the computer, and the processed information must get out. Information is entered and displayed on a wide variety of accessory devices called peripherals, which are also known as input/output (I/O) devices.
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Kyle Poindexter NT1110 Computer Structure and Logic I/O Devices 1/12/15 Mrs. Coleman What critical I/O devices are necessary to use a personal computer? Which ones are not necessary for normal day-to-day use and why? A monitor and a keyboard are the two I/O devices necessary to use a personal computer. The monitor is the most important output device. It allows one to see the information that is being sent out by the computer. You cannot send or receive data to or from a computer without
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auxiliary power system INTRODUCTION The auxiliary power system of the AC-traction, 4400 HP, Evolution® Series locomotive provides the electrical power that is required to operate all of the locomotive systems that we have learned about in the previous modules of this class. It also provides power for some equipment that will be described in this module for the first time. This module will introduce you to the auxiliary power system components and
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different type of separate electronic device. i.e. Computer only will be computer if it has INPUT DEVICE, PROCESS UNIT, and OUTPUT DEVICE. Central Processing Unit (CPU) : It is heart and mind of the computer without this unit computer unable to process. Keyboard : This is an input device which is used to input the data into the computer. Mouse : This is also an input device which is used to input the data into the computer. Monitor : This is an output device which is used to show the result
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Interrupts The program enters a wait loop in which it repeatedly tests the device status. During this period, the processor is not performing any useful computation. There are many situations where other tasks can be performed while waiting for an I/O device to become ready. To allow this to happen, we can arrange for the I/O device to alert the processor when it becomes ready. It can do so by sending a hardware signal called an interrupt to the processor. Common classes of interrupts: • Program
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Dashawn Newton Professor Phillippi Chapter 1 Homework Key Terms CH1 Computer – A device that processes—receives in, thinks about, changes, stores, sends out, displays, and prints—data in the form of bits. Bit – The smallest unit of data stored in a computing device, representing a single binary digit of value 0 or 1 Byte – A unit of data in a computer: 8 bits Random-Access Memory(RAM) – A type of short- term computer memory (storage) used by computers, primarily used as temporary working memory
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areas). The ALU performs mathematical functions, especially addition. The CU controls the data traffic in and out of the CPU. The registers are small high-speed units that store instructions and data for the CPU. The CPU accepts input and provides output to external devices. A crystal clock, known as the System Clock times each step in the fetch-execute cycle that Von Neumann uses. The faster the clock became, the faster the computing speed became. Once the clock’s maximum potential speed of around
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real-time. Output Devices and Implications A description of output devices that would be used, special output requirements, (e.g. network, preprinted forms, etc.), and output considerations (e.g., timing constraints). Input Devices and Implications A description of Input methods to be used, input devices (e.g., keyboard, mouse, etc.), special input requirements, (e.g. new or revised forms from which data would be input), and input considerations (e.g., timing of actual inputs). Storage
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computer is an electronic device, operating under the control of instructions stored in its memory. Input – accept data Processing – manipulate data Output – produce results from the processing Storage – store the data and results for future use HARDWARE Hardware is the physical parts of the computer. There are five main components: 1. Central Processing Unit 2. Primary Storage devices 3. Secondary Storage devices 4. Input Devices 5. Output Devices 1. The Central Processing
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will look at: the best methods of data input for given situations, in given situations what are the best methods of output, the different types of storage and their optimal use, and how certain components affect computer speed. Accuracy of Data Input is Important Now we will look at five different scenarios and what would be the best way to input data and why. Printed questionnaires or surveys are often part of research studies so the method used to input their data into the system needs to be
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