Hardware and Software unit 5
Software
Hardware is the phiscal components of a computer such as electric circuits inside the machine
It is the most important part of the computer. it interprets instructions from program and process data as well as managing and controling the enlire system
Is were we store the data and instructions that forma part of the programs
(Read only memory) The contents of this tape of memory can only be read stores the data that enables the computer to operate when torn it on and also lets the cpu comunicate with other components.
(Random acces memory) It contein can be changed it is a write-read memory and it erased when we torn the computer off Ram temporanly stores the programs and data that are being used by the computer
SD
IC
cpu
Memory
RAM
ROM
Storage devices
Magnetie
Optical
Cd, Rom, DVD, are compact discks that are read by laser beam they have a large storage capacity around 700 MB in the case of CD ROM 4,7 GB and 17 GB for a DVD and 25 GB in the case of blue ray
Solid state devices (Flash memories) (Used in pendrives , memory sticks, memory sticks) Its very compact and has a large storage capacity of up to several TB. It can be acces very quickly.
Portable hard drives are external storage units that have a large storage capacity and speed
Hard drines store data and save information even when the computer have been torned off
Periferal Devices
Input
Output
Key board
Mouse
Others Microphone Scaners...
Out put
Printer
Speaker
Screen
It display images or texts
This print information in diferent formats: Paper, phtographic paper,transparencies...
In put / Out put
This makes posible to enter informaion or get. Tablets and mobiles are propes computers that have a microprocesor memory and storage devices
Operting system
The O.S is louded from the hard drive and store in Ram memory were it remeints unit the computer is torned off, the most popular operative system for computer is windows
Is the set of programs or instruction that starts up and process the data so we can use for free software or open source can be used modified and redistribute freely
Enters data characters (Characters letters and numbers) and use the computerto perform a number of especific functions
Allows us to perform a number of actions by making the painter or course(usually an arrow) and presing a botton