Portables Review

Objectives:

To introduce the history and development of portable computers

Discuss the development of portable computers

Discuss PC cards and power management

Lesson:

You have been introduced to the history and development of portable computers.

The earliest portables consisted of a fairly large cabinet with a small screen, 5.25-inch floppy disk drives, and a keyboard that doubled as a cover when the computer was stored or carried.

Later, lighter portables known as laptops were made possible
by the development of nickel cadmium batteries that supplied continuous, steady
voltage and by the development of the larger and lighter liquid crystal display
(LCD) screens.

The processors used in mobile computing have been developed to the point that they now equal the processing power of high-performance desktop computer processors.

Examples of the high-performance processors developed specifically for notebooks are Intel's Mobile Pentium III and Mobile Celeron processors.

A Personal Computer Memory Card International Association (PCMCIA) card is a memory
or I/O device the size of a credit card that connects to a notebook or laptop computer
and is able to perform most computing functions.

For instance, they can be used
for flash memory, for I/O functions, suchas modems, LANs, SCSI, and sound, and
as hard drives.

Advanced Power Management (APM) enablespower saving in peripherals by shutting them
downwhen not in use.

The BIOS also needs to be APM-compliant so that the CPU can shut peripherals down and the OS needs to be capable ofpower management.

In addition, peripherals need to be Energy Star peripherals, which are configured to shut down without switching off.

Quiz

Basic Elecricity

Techonology

HTML