Computering chapter 14 by naroa agra rodrigo

agranaroa — 2025-10-03 09:45:58 UTC

computers are not intelligent; they are tools that follow instructions from the user and from the computer progamer,perfectly and quickly.

agranaroa — 2025-10-10 06:45:18 UTC

Hardware is the part of the computer that we can touch.The hardware is the components that are interconnected. The basic components are the CPU, the memory and the graphics card and the peripherals

CPU

agranaroa — 2025-10-10 06:52:47 UTC

The CPU (Central Processing Unit) is a big, green, plastic board with a lot of chips and many other electronic components mounted on it.The Central Processing Unit is also called "the processor". is the "brain" of the computer; it looks at the infomation and takes decisions based on logic

Memory

agranaroa — 2025-10-12 14:19:03 UTC

Memory stores information.

There are various tipes of memory in the computer:

FIXED MEMORIES:

They normaly stay inside the computer

1-hard disc: Also called "har drive", it is a set of rigis discs with a magnetic surface. It stores all your programs and files

2-RAM: This is a green plastic card with chips. The ram is installed in a slot on the mother board . Mother boards have empty slots so that we can add more ram if we can add more ram if we want. The ram stores the applications and files that we are using.

PORTABLE MEMORIES:

They are easy to connect and disconnect from the computer. Also, they are easy to carry.

CDs DVDs: We call them "optical memories" because they use light to work.

Pen drives, memory cards: They store the information in chips.

Graphics card

agranaroa — 2025-10-12 14:23:23 UTC

The grafics card is similar to the RAM. It defines the format of the graphics and helps the processor to proces the graphics faster

Peripherals

agranaroa — 2025-10-12 14:30:43 UTC

Peripherals are elements of comunication between the computer and the outside world.

ENTRY PERIPHERALS: Entry peripherals give information to the computer.

EXIT PERIPHERALS: THe computer uses exit peripherals to give information to us or to an actuator.

A peripheral can be both entry and exit; an example is the router to connect to the internet.

The router recieves information from the internet and sends information to the internet.

agranaroa — 2025-10-12 14:34:47 UTC

Software is the part of the computer that we can´t touch.

It is the logic that the computer follows

The programer writtes instructions. A set of instructions is a "program". when we use a program, the computer follows the instructions in the program.

The operating system (OS)

agranaroa — 2025-10-12 15:00:20 UTC

There is one OS computer; not more, not less.

The OS defines the internal logic for the funcioning of the computer.

THe program the OS, we must now which are the components of the hardware and how they are connected.

computers had one processor, one application, one floppy disk which was loaded after switching on the computer.

The user first loaded the OS, and then the application. the user could then start to use the application.

TODAY´s OS: It is stored in teh hard disc.

It can manage multiple applications at the same time.

It has a graphic display, so we can interact with the computer using a mouse.

It can connect to the internet.

There are also various OS for mobile telephones.

THE APPLICATIONS

agranaroa — 2025-10-12 15:09:48 UTC

Sometimes we call them "programs", but any piece of software is a program, incuding the operating sytem.

Applications are programs tha we use to do things on the computer; they are our tools.

An "application suit" is a group of applications in a package. For example:Open Office,Microsoft or ¡Work'09.

Application suites normally include a wordd processor, a spredsheet, a web browser and other applications.

The applications in the suite have a common user interface so that the user can easly learn how to use all of them.

The differewnt applications of an application suite can interact with each other. So we can, for example, insert a spreadsheet in a word processor document