Transcript Technically, a computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions.

Technically, a computer is a programmable machine.
This means it can execute a programmed list of
instructions and respond to new instructions that it is
given. Today, however, the term is most often used to refer
to the desktop and laptop computers that most people use.
Some of the major parts of a personal computer (or
PC) include the, CPU, memory (or RAM), hard drive, and
video card. While personal computers are by far the most
common type of computers today, there are several other
types of computers. For example, a "minicomputer" is a
powerful computer that can support many users at once. A
"mainframe" is a large, high-powered computer that can
perform billions of calculations from multiple sources at
one time. Finally, a "supercomputer" is a machine that can
process billions of instructions a second and is used to
calculate extremely complex calculations.
A. Digital and Analog Computer
*Analog Computer -It refers to numerical values that have a
range. This systems were the first type to be produced, one of
which was the slide rule
*Digital Computer -It refers to the processes in computers that
manipulate binary numbers (Os or 1s),which represent switches
that are turned on or off by electrical current .
*Wearable Computers: A record-setting step in the evolution of
computers was the creation of wearable computers. These
computers can be worn on the body and are often used in the
study of behavior modeling and human health.
Other types of Computer
*Hybrid Computers: These computers are a combination of both digital
and analog computers. In this type of computers, the digital segments
perform process control by conversion of analog signals to digital ones
*Mainframe Computers: Large organizations use mainframes for highly
critical applications such as bulk data processing and ERP. Most of the
mainframe computers have the capacities to host multiple operating
systems and operate as a number of virtual machines and can thus
substitute for several small servers.
* Microcomputers: A computer with a microprocessor and its central
processing unit is known as a microcomputer. They do not occupy space
as much as mainframes. When supplemented with a keyboard and a
mouse, microcomputers can be called as personal computers.
* Desktops: A desktop is intended to be used on a single location. The
spare parts of a desktop computer are readily available at relative lower
costs. Power consumption is not as critical as that in laptops.
* Laptops: Similar in operation to desktops, laptop computers are
miniaturized and optimized for mobile use. Laptops run on a single
battery or an external adapter that charges the computer batteries.
*Personal Digital Assistants (PDAs): It is a handheld computer and
popularly known as a palmtop. It has a touch screen and a memory
card for storage of data. PDAs can also be effectively used as
portable audio players, web browsers and smart phones.
*Minicomputers: In terms of size and processing capacity,
minicomputers lie in between mainframes and microcomputers.
*Supercomputers: The highly calculation-intensive tasks can be
effectively performed by means of supercomputers. Quantum
physics, mechanics, weather forecasting, molecular theory are best
studied by means of supercomputers. Their ability of parallel
processing and their well-designed memory hierarchy give the
supercomputers, large transaction processing powers.
*Hardware
*Software
*People ware
-Hardware refers to a physical piece of a computer. This could be
a hard drive, monitor, memory chip, or CPU. The key idea is that the
item is something you can touch. This compares to software which is
not tangible in any way. You can't pick it up or weigh it. Yet, without
software, hardware is useless.
Five components of computer:
-Input Devices
-Output Devices
-Processing Devices
-Storage Devices
-Networking devices
-Accept data in a form that the computer can utilize. Also,
the input devices send the data or instructions to the
processing unit to be processed into useful information.
Common Example:
- Output devices translate processed data from the
microprocessor back into a understand, appreciate and put to use.
Common Example:
•
-Where the input data are change , and usually combined with
other information, to produce data into a more useful.
Common Example;
-A computer storage device is any type of hardware that
stores data. The most common type of storage device, which
nearly all computers have, is a hard drive. The computer's
primary hard drive stores the operating system, applications,
and files and folders for users of the computer.
Common Example:
-Networking devices are some of the most important items that
allow us to communicate with others, surf the Web, send and receive
streams of data, and hold a videoconference with employees spread
all over the world. Understanding networking devices is almost a
survival requirement in our highly advanced, hi-tech, and modern
world.
Common example;
-Software is a generic term for organized
collections of computer data and instructions, often
broken into two major categories: system software
that provides the basic non-task-specific functions
of the computer, and application software which is
used by users to accomplish specific tasks. System
software is responsible for controlling, integrating,
and managing the individual hardware components
of a computer system so that other software and the
users of the system see it as a functional unit
without having to be concerned with the low-level
details such as transferring data from memory to
disk, or rendering text onto a display.
Types of Software
- System software is computer software designed to
operate the computer hardware and to provide and
maintain a platform for running application
software
- Programming software usually provides tools to
assist a programmer in writing computer
programs, and software using different
programming languages in a more convenient way.
- Application software, also known as an application,
is a computer software designed to help the user to
perform singular or multiple related specific tasks.
-People ware refers to the role of people in the computing
process. While hardware and software make up a computer
system, both are designed to be used by humans . People ware
can refer to many different things, including computer
engineers, programmers, individual computer users, or
groups of people. Anyone who designs, develops, or uses
computer systems plays an important role in the computing
process and may be considered people ware.
-People ware is sometimes considered a third aspect that
takes into account the importance of humans in the
computing process.
People ware is less tangible than hardware or software, since
it can refer to many different things. Examples of people ware
include individual people, groups of people, project teams,
businesses, developers, and end users.
That’s all ,
thank
you!!
Acknowledgement
-http://en.wikipedia.org/wiki/Computer
-http://www.buzzle.com/articles/different-types-ofcomputers.html
-http://en.wikipedia.org/wiki/Mouse_(computing)
- http://www.fotosearch.com/photos-images/ CPU. htmhttp://www.fotosearch.com/photosimages/joystick.htmll
-http://en.wikipedia.org/wiki/Image_scanner
-http://en.wikipedia.org/wiki/Keyboard_(computing)
-http://www.bizrate.com/projectors/computerprojector/
-http://www.fotosearch.com/photos-images/compactdisc.html
-http://www.fotosearch.com/photosimages/computer-monitor.html
-http://www.fotosearch.com/photosimages/printer_2.html
- http://www.bhphotovideo.com/c/buy/ComputerSpeakers/ci/6565/N/4294542004
- http://en.wikipedia.org/wiki/Hardware
- http://en.wikipedia.org/wiki/Peopleware
- http://en.wikipedia.org/wiki/Computer_software
By:
Kaiser_khen18