Computer Hardware Short
Content
Computer hardware
DEFINITION- Computer hardware are component devices which are typically installed into or peripheral to a computer case to create a personal computer upon which system software is installed including a firmware interface such as a BIOS and an operating system supporting application software that performs the operator's desired functions. Operating systems usually communicate with devices through hardware buses by using software device drivers. HISTORY- Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with our fingers. The earliest counting device was probably a form of tally stick. The use of counting rods is one example. The abacus was early used for arithmetic tasks. What we now call the Roman abacus was used in Babylonia as early as 2400 BC. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. Several analog computers were constructed in ancient and medieval times to perform astronomical BC), which are generally regarded as the earliest known mechanical analog computers. Hero of Alexandria (c. 10–70 AD) made many complex mechanical devices including automata and a programmable cart. Other early versions of mechanical devices used to perform one or another type of calculations include the planisphere and other mechanical computing devices invented by Abū Rayhān al-Bīrūnī (c. AD 1000); the equatorium and universal latitude-independent astrolabe by Abū Ishāq Ibrāhīm al-Zarqālī (c. AD 1015); the astronomical analog computers of other medieval Muslim astronomers and engineers; and the astronomical clock tower of Su Song (c. AD 1090) during the Song Dynasty.
HAREDWARES OF A COMPUTER Monitor Motherboard CPU RAM Expansion cards Power supply Optical disc drive Hard disk drive Keyboard Mouse
USES Hard Disk- The hard disk drive is a rectangular, metallic box found inside a desktop computer's tower casing. All the information in a computer, including the OS (operating system), installed applications and programs and user documents are stored in the hard disk RAM & Processor -RAM modules fit into predefined slots on the motherboard, and the total RAM of a computer depends on the capacities of the individual modules. Input & Output Devices -A computer uses input devices to take instructions from the operator. Common input devices include the keyboard, mouse, scanner, microphone and webcam. Without an input device, a user would not be able to feed information to, or interact with a computer. Output devices such as the display monitor, speakers and printer enable the computer to give information back to the user after executing tasks Removable Media- Removable media allow a computer to access information that is not stored inside the hard disk. ADVANTAGES It serves as large memory storage. Helps in computing the data. Easy in analysis and interpretation of data. Cannot be easily destroyed.
DISADVANTAGES Costly Requires proper care and storage Requires sofistication Proper training is necessary to handle the hardwares.
DEFINITION- Computer hardware are component devices which are typically installed into or peripheral to a computer case to create a personal computer upon which system software is installed including a firmware interface such as a BIOS and an operating system supporting application software that performs the operator's desired functions. Operating systems usually communicate with devices through hardware buses by using software device drivers. HISTORY- Devices have been used to aid computation for thousands of years, mostly using one-to-one correspondence with our fingers. The earliest counting device was probably a form of tally stick. The use of counting rods is one example. The abacus was early used for arithmetic tasks. What we now call the Roman abacus was used in Babylonia as early as 2400 BC. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money. Several analog computers were constructed in ancient and medieval times to perform astronomical BC), which are generally regarded as the earliest known mechanical analog computers. Hero of Alexandria (c. 10–70 AD) made many complex mechanical devices including automata and a programmable cart. Other early versions of mechanical devices used to perform one or another type of calculations include the planisphere and other mechanical computing devices invented by Abū Rayhān al-Bīrūnī (c. AD 1000); the equatorium and universal latitude-independent astrolabe by Abū Ishāq Ibrāhīm al-Zarqālī (c. AD 1015); the astronomical analog computers of other medieval Muslim astronomers and engineers; and the astronomical clock tower of Su Song (c. AD 1090) during the Song Dynasty.
HAREDWARES OF A COMPUTER Monitor Motherboard CPU RAM Expansion cards Power supply Optical disc drive Hard disk drive Keyboard Mouse
USES Hard Disk- The hard disk drive is a rectangular, metallic box found inside a desktop computer's tower casing. All the information in a computer, including the OS (operating system), installed applications and programs and user documents are stored in the hard disk RAM & Processor -RAM modules fit into predefined slots on the motherboard, and the total RAM of a computer depends on the capacities of the individual modules. Input & Output Devices -A computer uses input devices to take instructions from the operator. Common input devices include the keyboard, mouse, scanner, microphone and webcam. Without an input device, a user would not be able to feed information to, or interact with a computer. Output devices such as the display monitor, speakers and printer enable the computer to give information back to the user after executing tasks Removable Media- Removable media allow a computer to access information that is not stored inside the hard disk. ADVANTAGES It serves as large memory storage. Helps in computing the data. Easy in analysis and interpretation of data. Cannot be easily destroyed.
DISADVANTAGES Costly Requires proper care and storage Requires sofistication Proper training is necessary to handle the hardwares.
