Information TechnologyInformation Technology

Ms. Rocío AcevedoMs. Rocío Acevedo

August 2006August 2006

Information TechnologyInformation Technology

It is the science that let us better It is the science that let us better communicate, analyze and communicate, analyze and understand information.understand information.

It studies and teach us everything It studies and teach us everything about computers.about computers.

A computer is an electronic device A computer is an electronic device which...which...

with certain given data (INPUT)...with certain given data (INPUT)... makes mathematical and logical makes mathematical and logical

operations (PROCESSING)....operations (PROCESSING).... to give us information as an to give us information as an

answer (OUTPUT).answer (OUTPUT).

ComputerComputer

InputInput ProcessingProcessing OutputOutput

DataData Information Information

CPUCPU

Computer Basic FunctionsComputer Basic Functions

Types of Computers Types of Computers By sizeBy size

PC (personal computer)PC (personal computer) – a – a computer designed for general use computer designed for general use by a single person by a single person (microcomputers).(microcomputers).                      

Types of Computers Types of Computers By sizeBy size

DesktopDesktop – a PC not designed for – a PC not designed for portabilityportability

Notebook or LaptopNotebook or Laptop – portable – portable computer battery-operatedcomputer battery-operated

PDA (Personal Digital PDA (Personal Digital Assistant)Assistant) – a tightly integrated – a tightly integrated computer (flash memory & touch computer (flash memory & touch screen).screen).

Types of Computers Types of Computers By sizeBy size

WearableWearable - The latest trend - The latest trend in computing is wearable in computing is wearable computers. Essentially, computers. Essentially, common computer common computer applications (e-mail, applications (e-mail, database, multimedia, database, multimedia, calendar/scheduler) are calendar/scheduler) are integrated into watches, cell integrated into watches, cell phones, etc.phones, etc.

Types of Computers Types of Computers By sizeBy size

WorkstationWorkstation – a desktop computer that – a desktop computer that has a more powerful processor, has a more powerful processor, additional memory and enhanced additional memory and enhanced capabilities for performing a special capabilities for performing a special group of task.group of task.

ServerServer – a computer that has been – a computer that has been optimized to provide services to other optimized to provide services to other computers over a network. Servers computers over a network. Servers usually have powerful processors, lots of usually have powerful processors, lots of memory and large hard drives.memory and large hard drives.

Types of Computers Types of Computers By sizeBy size

MainframeMainframe - the term - the term mainframe has fallen out of use mainframe has fallen out of use in favor of enterprise server. in favor of enterprise server. The term is still used, The term is still used, particularly in large companies particularly in large companies to describe the huge machines to describe the huge machines processing millions of processing millions of transactions every day. transactions every day.

Types of Computers Types of Computers By sizeBy size

SupercomputerSupercomputer - Usually - Usually costs hundreds of thousands or costs hundreds of thousands or even millions of dollars. Some even millions of dollars. Some are single computer systems, are single computer systems, but most are comprised of but most are comprised of multiple high performance multiple high performance computers working in parallel computers working in parallel as a single system.as a single system.

Computer PartsComputer PartsHardwareHardware

Physical part: Physical part: computer, computer, internal internal components components and devices.and devices.

SoftwareSoftware

Logical part, the Logical part, the programs and programs and

data needed to data needed to give results.give results.