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Hardware and operating system, 2.1. Microprocessor, Connecting external…
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2.1. Microprocessor
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The clock rate set the pace at which process are completed. The clock continously generate electric impulses
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A microprocessor's power also depends on its cache memory and the speed at which it comunicates with the RAM
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1.1. Computer functions
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We use the name Hardware for the physical components of the computer system the we use and those we can touch and move, like the mouse and the keyboard
Input of data using peripheral devices
Output of data using pripheral devices
Storing data using the storage devices
Processing in the central processing unit, using the micro processor and the memory
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ASCII
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We give a code to each of the lettres of the alphabet and to the characters computer use, so that we can store them. Them codes consists of the figures 1 and 0
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Storage devices
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The RAM stores data temporaly. When you turn off the computer this data disappears. We use data storage to permanently save this data
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6.2. Wireless networks
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Wireless network, known as WLANs use electromagnetic waves to transmit data. All computers need to have a wireless network card
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RAM
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The computer's main memory its RAM. Since RAM doesn't retaijn info. when the computer is switched off, we must save our work to the hard disk before we close the application. Otherwise we'll lose our work.
Cache memory
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RAM connot work at the same speed as the microprocessor, so a much faster is install between the RAM and the microprocessor: The cache memory
ROM BIOS
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When you turn ojn the computer it automaticlly check the system. This inicial check is carried out using instructions strored in a special read only memory: ROM BIOS
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