Mrs. Venty’s Class

Presentation

• IT IS MATHEMATICS THAT OFFERS THE EXACT MATHEMATICAL SCIENCES A CERTAIN MEASURE OF SECURITY WHICH, WITHOUT MATHEMATICS, THEY COULD NOT OBTAIN.

ALBERT EINSTEIN

THINK DIFFERENT …. THINK SCIENCE …..

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a. Sleeping ?

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A PRESENTATION BY:

Adita Tria Natasya Alfia Dewi Masyitoh Dina Savita Marchelly Mico Norman Laksono Rendi Akbar Septarani Satriastiwi

What’s the title ???

INFORMATION TECHNOLOGY & THEIR

DEVELOPMENT

Data, Information, & Information Sicle

Data is the fact that written or recorded of many differences media, whereas the information or data that we had to manner, formed, or manipulation for many occasion.

Information system in computer will be save in number form and use number system 2 base or we can call binary system.

Data is information form that still undone, so we must manner and had processing to get the right information.

The sicle of data process :

Input Data Data Processing

Output Information

Data Manner Tools

Manual tools with abacus Mechanic tools with register machine Electric mechanic tools with calculator Electric tools with computer

History of Development Computer

In business world, for detect goods with barcode or scanner.

In residences, for security. In automotive world, for show fuel capacity. In entertainment, for making digital sound

with audio stereo system and help to make animation picture, etc.

Previous Invented That Support The Next Computer Invented

Abacus Pascaline Difference Engine Punched Card Hollerith Electromechanical Accounting Machine

(1919)

HARDWARE

What is hardware?

Hardware is physical component of a

computer system

In general, hardware divide by:

► CPU► Main Memory► Cache Memory► Input Device► Secondary storage► Output device

CPU

 Central Processing Unit (CPU) or processor is an electronic circuit that can execute computer programs, which are actually sets of instructions. It has two important components, Control Unit and Arithmetic Logical Unit(ALU)

Main Memory

It also called primary memory or internal memory.

Function of main memory is:- Saving data that comes form input

devices until data sent to ALU - Saving instruction that comes input devices or secondary storage Two importants components in Main

memory is RAM and ROM

RAM (Random Access Memory)

This memory is writeable, readable, addable. It include of volatile, it means the information is lost after the power is switched off.

ROM (Read Only Memory)

It is read only memory. It used for program saver to computer operation like boot program and BIOS program

Cache Memory

The high speed memory that used for medium between processor with high speed and RAM with lower speed. With cache the data can move to this memory and then ALU will tke them.

Input Device

Input device is all devices that used for inputing data to computer.

Example: - Keyboard -Joystick -Mouse - Digital Camera

Keyboard Keyboard is an input device, partially modeled after the typewriter keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence. While most keyboard keys produce letters, numbers or character.

Joystick

A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks are often used to control video games, and usually have one or more push-buttons whose state can also be read by the computer. A popular variation of the joystick used on modern 

Mouse

 mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons. It sometimes features other elements, such as "wheels", which allow the user to perform various system-dependent operations, or extra buttons or features can add more control or dimensional input. The mouse's motion typically translates into the motion of a pointer on a display, which allows for fine control of a Grapichal User Interfance

Secondary Storage

The computer usually uses its input/output channels to access secondary storage and transfers the desired data using intermediate area in primary storage. Secondary storage does not lose the data when the device is powered down—it is non-volatile. Example of Secondary Storage: Hard diskRemovable diskUSB Flashdish

Hard disk

Hard disk or fixed disk can save data or program with big capacity. Main part of Hard disk: Stepper motorDisk medium Controller boardRead/Write head

Removable disk

It also known as floppy disk. There are 2 type of floppy disk:• High destiny•Low destiny

USB Flash Disk

USB flash drives are typically removable and rewritable, much smaller than a floppy disk, and most weigh lessan ounce. The capacity is form 128 MB, 1GB,6 Gb, and always will be expand.

Output Device

Example of output device:-Monitor-Printer

-Sound system

Monitor

Monitor is a piece of electrical equipment  which displays images generated by devices such as computer, without producing a permanent record. The monitor comprises the display device, circuity, and an enclosure. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD), while older monitors use a cathode ray tube (CRT).

Printer

printer is a peripheral which produces a hard copy  of documents stored in electronic form, usually on physical print media such as paper or transparencies. Many printers are primarily used as local peripherals, and are attached by a printer cable or, in most newer printers, a USB cable to a computer which serves as a document source. Some printers, commonly known as network printers, have built-in network interfaces and can serve as a hardcopy device for any user on the network. Individual printers are often designed to support both local and network connected users at the same time.

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