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Mercedes Alonso, Luciana Pierangeli & Florencia Glasbauer

Capítulo 1. ICT. Mercedes Alonso, Luciana Pierangeli & Florencia Glasbauer. Index. Hardware Software. Hardware. Parts of the computer that you can see and touch. Memory: RAM ( random access memory ) ROM ( read only memory ) RAM: c omputer’s ‘working memory ’

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Mercedes Alonso, Luciana Pierangeli & Florencia Glasbauer

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  1. Capítulo 1 ICT Mercedes Alonso, Luciana Pierangeli & Florencia Glasbauer

  2. Index • Hardware • Software

  3. Hardware Parts of the computer that you can see and touch Memory: • RAM (randomaccessmemory) • ROM (readonlymemory) RAM: computer’s‘working memory’ • temporarily stores programs and data that are being used at a given time. • contents can be changed and are lost when the computer is turned off (‘volatile memory’) ROM • store program that runs when the computer is turned on which loads the operating system. • contents can’t be changed and aren’t lost when the computer is switched off (‘non-volatile memory’)

  4. Software Instructions that makes the computer do sth. You can´tseenortouch them. Main Types: • Operating system or system software: Eachdifferenttype of operating system makes a computer act in a slightlydifferentway: • Interface (HCI) : controlswhatuserseeonscreen • GraphicalUser Interface (GUI) : uses graphics to stand for more complicatedactions that the computer wants to carryout. • Applicationsorprograms

  5. Maincomponents of a computer Input device: put data into the computer Processor: (CPU) doessth. with the data givenby the input device Output device: used to tellsth. orsomeone the results that the processorcame up with. Storage Device orBacking Storage: (IAS, mainmemory,ROM,RAM) keepsall the data and software that is used.

  6. Size of Memory Bit: binarydigit (a 0 or a 1) Byte: 8 bits Kilobyte: 1024 bytes Megabyte: 1024 kilobytes Gigabyte: 1024 megabytes Terabyte: 1024 gigabytes

  7. Operating Systems • Largecomputers, big and slow: mainframes • A keyboard and a monitor sccreen, whichlets a person have theirownconnection to the computer: keyboard

  8. Belonged and controlledby a person: personal computers • Portable computers: laptops • Small, Cheap, lesspowerful laptops: palmtops

  9. Onekind of palmtops uses a stylus to operate symbols, including a keyboard, on a scree: prsonal digital assistanya(PDAs) • Mobile phone, whichallowsconnection to the Internet:smatphone

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