### device | machine | computer:

Modern computer
* All modern computers have a linear memory containing the instructions as well as the data
  - registers
  - use multitasking to perform several tasks at once
* Most modern computers have a substantial amount of memory
  - eight bits to a byte
  - support a number of screen resolutions
* are electronic and digital
  - machines
  - very different from early computers
* can calculated the lifetime of a star of a given mass with good accuracy.
* have millions of bits of memory.
* make it relatively easy to convert spreadsheets into graphs
  - use of two storage technologies - magnetic and optical
* manipulate information in the form of on and off signals.
* rely heavily on graphics.
+ Computer: Tools
  * Modern computers are very different from early computers. They are now very powerful machines that are able to do billions of calculations every second. Most people have used a personal computer in their home or at work. Computers are useful for many different jobs where automatic functions are useful. Some examples are controlling traffic lights, vehicle computers, security systems, Washing machines and Digital Televisions.
  * Modern computers are electronic machines. A computer is only useful if it has both hardware and software. Hardware is the physical parts the computer is made of - for example keyboard, mouse, screen, tower, and the circuits inside it. Software uses the hardware by taking input and changing it in to useful output.
  * Many modern computers do billions of calculations each second. They only follow the instructions in their software programs.

Multimedia computer
* are newer computers with features like CD-ROMs and sound cards.
* contain desktop publishing, photo design, sound and image editing software.

### device | machine | computer:

Network computer
* Some network computers use 'boot chips' that get the operating system over a network.
* utilize a Java-based architecture.
+ Boot device: Computer hardware
  * Some network computers use 'boot chips' that get the operating system over a network. Web phones also use such chips to identify the user to the cell network.  'Boot card' standards may let many users boot kiosk computers with full privacy and access to all applications they own. There are also 'boot boards' or 'boot 'add-in' cards' that are more permanent than boot cards.

### device | machine | computer:

Networked computer
* All networked computers are capable of accessing information at the same time.
* All networked computers have access to the Internet
  - direct access to the Internet
* are able to share high-speed Internet connections simultaneously
  - common in schools in many parts of the world
  - the basis of our modern day economy
* can access the Internet through one modem.
* can share a dialup or high-speed internet connection
  - common printers, applications, files, modems, and many other devices
  - files and applications
  - files, software, printers and scanners
  - printers, server resources and information
* have the power to boost learning in numerous ways.
* make it easier to transfer files and share programs.
* reconnect to the network once they are started.
* require strong cryptography, the coding that makes data secure.

### device | machine | computer:

Palm computer
* can store contacts , addresses , notes , and many other things.
+ Palm, Inc.: American technology companies
  * Palm, Inc.' is an American computer company. It makes small handheld computers. Most of their computers have a handwriting recognition function called 'Graffiti'. This is a part of the screen that can understand what is written on it. Palm computers can store contacts, addresses, notes, and many other things. Another feature, called 'Hotsync', allows the user to have their personnal computer and Palm connect to each other and be updated.