Input Data is factual information and it needs to be accurately captured in order to be processed. There are many methods to input data and each situation warrants a different method. There can be several different ways to input the information and it can be done in an automatic fashion‚ as with a computer‚ or it can be done manually‚ as with a human writing the information down. For instance‚ printed questionnaires would best use a special scanning device called an optical data reader that uses
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containing firmware range from end-user products such as remote controls or calculators. Computer chips that have data or programs recorded on them are firmware. These chips commonly include the i)ROMs (read-only memory) ii) PROMs (programmable read-only memory) iii)EPROMs (erasable programmable read-only memory) Firmware in PROM or EPROM is designed to be updated if necessary through a software update. Firmware is not categorized either as hardware or software‚ but a mix of both. The reason firmware
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typical scenario: You turn the computer on. The computer loads data from read-only memory (ROM) and performs a power-on self-test (POST) to make sure all the major components are functioning properly. As part of this test‚ the memory controller checks all of the memory addresses with a quick read/write operation to ensure that there are no errors in the memory chips. Read/write means that data is written to a bit and then read from that bit. The computer loads the basic input/output system (BIOS)
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Contents II. Introduction 2 III. Computers 2 A. CPU 2 B. Memory storage 3 1. Primary storage 3 2. Secondary storage 4 C. Peripherals 8 1. Ink-jets (bubble-jets) printers 8 2. Laserjet printers 9 IV. Connecting To Internet 10 V. Conclusion 12 VI. Reference List 13 * Introduction Nowadays‚ running business in 20th century means that you got to be clever about technology. When companies are striving for higher achievements and more-efficient workability‚ innovation is what
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one module. Hard Disk Drive (HDD) Used to read disks‚ data is read in a random access matte. The SATA connects the host bus adapters to the mass storage devices. The IDE connects the drive directly to the motherboard and the SCSI is capable of supporting 8 devices. Optical Drives Optical drives are a disk drive that uses laser light or electromagnetic waves to read the data. A HDD is similar to the optical drives. Disks can have ROM – read only memory – which means that the information
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Why is it important to Read ? Reading‚ I believe‚ is something that many of us practice (perhaps) daily‚ but often unreflectively‚ if not even unconsciously—much like breathing. If only we lived as dependently on reading as we do on breathing for the continuance of life. By way of metaphor‚ to aid your consideration of active‚ engaged reading‚ I point out that in many forms of meditation this usually ignored activity of breathing should be at the forefront of consciousness. With similarly heightened
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1 operations that change data must appear as atomic such that no other thread intervenes to spoil your data’s invariant. Even a simple operation such as ++count_‚ where count_ is an integral type‚ must be locked as “++” is really a three steps (read‚ modify‚ write) operation that isn’t necessarily atomic. In short‚ with lock-based multithreaded programming‚ you need to make sure that any operation on shared data that is susceptible to race conditions is made atomic by locking and unlocking a mutex
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years back. Would you accept that life? Today we enjoy such a comfortable life‚ don’t we owe this to computers. Look at the way the computers have a role to play in our life. Today when we get up in the morning and want to read the newspaper‚ internet permits us to read the latest news of any newspaper in the world. Before going to office we can check the mails and also reply them instantly. There is no need for physical mail‚ paperwork and delays. In the office computers help us to connect
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Inside the System Unit • System unit: The main case of a computer • A system unit‚ also known as base unit‚ is the main body of a desktop computer. – Houses the processing hardware for a computer – Also contains memory‚ the power supply‚ cooling fans‚ and interfaces to connect peripheral devices – Houses the drive bays in which storage devices (hard drives‚ DVD drives‚ etc.) are located – With a desktop PC‚ usually looks like a rectangular box Power
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computer? Memory is very important for any computer‚ without memory a computer wouldn’t be the multitasking machine that it is today. For that matter a computer couldn’t do much without. There are two types of memory RAM (random access memory) and ROM (Read-only memory). With memory a computer is able to hold applications‚ operating systems and saved files such as documents. Understanding the difference between the two types of memory is key. RAM is a volatile memory meaning the data can be lost when
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