Laptop computers have evolved significantly since their inception in the 1980s. Early laptops like the Osborne 1 had 5-inch screens and floppy disk drives. By the late 1980s, laptops were becoming popular for business users and models like the NEC UltraLite weighed only 2 kg. Today, there are several types of laptops including desktop docking stations, laptops, notebooks, subnotebooks, and tablet PCs. Key differences are in screen size, weight, and included features such as disk drives and connectivity options.
Computer: Definition
A computer is a machine that can be programmed to manipulate symbols. Its principal characteristics are:
It responds to a specific set of instructions in a well-defined manner.
It can execute a prerecorded list of instructions (a program).
It can quickly store and retrieve large amounts of data.
Therefore computers can perform complex and repetitive procedures quickly, precisely and reliably. Modern computers are electronic and digital. The actual machinery (wires, transistors, and circuits) is called hardware; the instructions and data are called software. All general-purpose computers require the following hardware components:
Central processing unit (CPU): The heart of the computer, this is the component that actually executes instructions organized in programs ("software") which tell the computer what to do.
Memory (fast, expensive, short-term memory): Enables a computer to store, at least temporarily, data, programs, and intermediate results.
Mass storage device (slower, cheaper, long-term memory): Allows a computer to permanently retain large amounts of data and programs between jobs. Common mass storage devices include disk drives and tape drives.
Input device: Usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.
Output device: A display screen, printer, or other device that lets you see what the computer has accomplished.
In addition to these components, many others make it possible for the basic components to work together efficiently. For example, every computer requires a bus that transmits data from one part of the computer to another.
This presentation is based on how laptops are evolved from olden days to present days. This presentation includes the History, Advantages, Disadvantages of laptops.
going to give you a breakdown of the top laptop brands so that it’s easier for you to make an informed decision. I will list the best model from each brand together with the Pros and Cons for each brand. The first and most important thing is to understand for what purpose will you use your laptop. Will you use it for gaming, business, academic work, heavy software usage, or just for internet navigation? This information will let you decide on the top brand and specs for your model.
Computer: Definition
A computer is a machine that can be programmed to manipulate symbols. Its principal characteristics are:
It responds to a specific set of instructions in a well-defined manner.
It can execute a prerecorded list of instructions (a program).
It can quickly store and retrieve large amounts of data.
Therefore computers can perform complex and repetitive procedures quickly, precisely and reliably. Modern computers are electronic and digital. The actual machinery (wires, transistors, and circuits) is called hardware; the instructions and data are called software. All general-purpose computers require the following hardware components:
Central processing unit (CPU): The heart of the computer, this is the component that actually executes instructions organized in programs ("software") which tell the computer what to do.
Memory (fast, expensive, short-term memory): Enables a computer to store, at least temporarily, data, programs, and intermediate results.
Mass storage device (slower, cheaper, long-term memory): Allows a computer to permanently retain large amounts of data and programs between jobs. Common mass storage devices include disk drives and tape drives.
Input device: Usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.
Output device: A display screen, printer, or other device that lets you see what the computer has accomplished.
In addition to these components, many others make it possible for the basic components to work together efficiently. For example, every computer requires a bus that transmits data from one part of the computer to another.
This presentation is based on how laptops are evolved from olden days to present days. This presentation includes the History, Advantages, Disadvantages of laptops.
going to give you a breakdown of the top laptop brands so that it’s easier for you to make an informed decision. I will list the best model from each brand together with the Pros and Cons for each brand. The first and most important thing is to understand for what purpose will you use your laptop. Will you use it for gaming, business, academic work, heavy software usage, or just for internet navigation? This information will let you decide on the top brand and specs for your model.
Why buy a tablet AND a PC, when you can buy one device that does it all? As a long time Windows Tablet user, I've finally found nirvana with a new class of device that works as both a tablet AND a PC. This document explains why I prefer this approach over two separate devices.
3. First laptops did not look like the book sized
folding
laptops that are available today. The Osborne 1
came
with a five-inch screen, modem port, two 5 1/4
floppy
drives, a large collection of bundled software
programs, and a battery pack.
4. Laptop computers were becoming popular
among business people by the end of 1980’s.
The NEC_UltraLite, released in mid-1989, was
perhaps the first notebook computer, weighing
just over 2 kg. It contained a two megabyte
RAM drive which reduced its utility as well as
its size.
Compaq LTE series were the first notebook
computers to include hard drives
5. Today you get a laptop called Notebook
which is considered to be an industry
standard for laptops.
6. The first Apple Computer machine was designed in
1989 Macintosh Portable. The Apple PowerBook
series were introduced in 1991. This pioneered
changes such as the placement of the keyboard,
room for palm rest, and the inclusion of a trackball.
IBM released Thinkpad 700C the following year. The
Thinkpad was of similar design.
7. Types of Laptops
1. Desktop Docking Station
2. Laptop
3. Notebook
4. Sub Notebook
5.Tablet PC
6. Digitizers
8. 1. Desktop Docking Station
This includes large and high quality LCD display, 64MB
of RAM, a hard drive that can hold 20GB or more, a CD-
ROM or DVD-ROM drive along with a floppy drive, built-
in audio capabilities, and ports which provide lot of
connectivity options. The users who are constantly
traveling prefer this type of laptop. For this type of
system a docking station is used to provide network
connectivity when not on the road.
9. 2. Laptop
The Laptop is the largest among the four types. The size of the Laptop is
approximately 9x12x2 and weighs 9 pounds or more. High performance
Laptops are introduced in the market. It has large active-matrix displays,
64MB-256MB of RAM and hard drives up to 20GB. Almost all the systems
carry CD-ROM or DVD drives. Some systems have combination of DVD-
CD/ RW drives and wireless Wi-Fi network capabilities. By using Docking
station you can replace Laptop as a desktop. Rather than a separate
Laptop or a desktop this will be better for a frequent traveler. You have to
pay extra for all these features.
10. 3. Notebook
A Notebook is designed to be a little smaller than a laptop. Notebooks
are cheaper and lighter than a laptop. Though the display is as large
as a higher-end machine, the case is thinner, about 1 to 2 inches, and
weighs 5 to 7 pounds. The weight and size of the notebook is reduced
by avoiding a floppy drive or the CD-ROM/ DVD-ROM.
11. 5.Tablet PC
Tablet PC is a slate-shaped notebook computer equipped with a touch-
sensitive screen designed to interact with a stylus or a digital pen. The
pen can be used to open, close or drag files using a mouse or write
notes or type e-mail using a keyboard. The first commercial Tablet-type
computer was designed by the GRiD Systems in the 1989. It was known
as the GRiDPad and used MS-DOS as its operating system. Later in
1993, IBM released the 750P and 360P series of tablet computers into
the consumer market. With the advent of Microsoft Windows XP Tablet
PC Edition in 2002, the Tablet PC market was standardized with
Microsoft operating systems.
12. Wi-Fi
Wi-Fi is known as Wireless Fidelity, is a
wireless technology brand owned by the
Wi-Fi Alliance. Wi-Fi intends to improve
the interoperability of wireless local area
network products based on the IEEE 802.11
standards