Laptops & Palm (’99)
Laptops & Palm (’99)
Eric Allen
CI366
PC Notebook and Palm Computers
10/5/99
We’ve come a long way from the first successful portable computer. The Osborne, was introduced in 1981 and weighed 25 pounds, it came with 64 kilobits of memory. The Osborne’s limited capacity and portability made it awkward compared to today’s notebooks. And the cost was close to $1800, that’s not to affordable for the 1980’s.
Through relentless pursuit of technology, notebooks of today are just a step-down from the desktop PC. The notebooks of today are lightweight, weighing about 7 pounds and just as functional as your home computer. These notebooks occupy the same software and operating systems as the desktop. With the performance of today’s notebooks nothing, time and speed will not be sacrificed. Let’s take a closer at what features and options they have to offer.
Processor
There are two main manufactures of processors used in notebooks today, Intel and Advanced Micro Devices Inc. (AMD). The Intel processor is by far the most popular. Most processors have 32 kilobytes of cache memory directly on the processors chip. This type of memory is known as L1 cache. Without this L1 cache, when traveling outside the processor for information you has to slow down to the bus speed. The bus speed in notebook computers is 33MHz or 66MHz, that’s slowing you down compared to the speed of the processor ex. 350Mhz. Through improvements AMDs product has become more popular, they are noted for offering lower priced notebooks. Let’s talk about clock speed, both Intel and AMD K6 use megahertz to measure clock speed. Due to the differences in architecture, between the 2 chips, the K6-2 processor rarely performs at the level of the Pentium II processor with similar clock speeds.
(Computer Shopper September 1999 and PC World July 99)
Memory
Another issue to take into consideration is how much RAM (Random Access Memory) a unit has. RAM is an electronic storage area, where programs and data will be stored before the processor can manipulate it. Having insufficient RAM, the processor will wait to get its next instruction. Also you need to know how much RAM you can add later. There are a few types of ram the notebook has to offer.
SDRAM is a type of RAM found in notebooks, it’s a newer standard, and it offers a higher performance. What exactly is SDRAM (Synchronous Dynamic Random Access Memory)? SDRAM is a new variant of DRAM that includes an on chip burst counter. The burst counter allows to increment column addresses and increase of the burst access. With SDRAM the CPU and RAM are locked together by the same clock, this allows SDRAM to anticipate the CPUs next move. This is telling you that SDRAM will operate very quickly and contains its contents without being refreshed. One downfall to SDRAM is if your computer is running less than 66MHz, your computer will not be able to satisfy the needs represented by SDRAM. This factor doesn’t come into consideration with today’s high-speed notebooks.
With today’s ability you can interplace chips to the consumers needs. A more expensive type of RAM chip available is VRAM (Video RAM), with 2 data paths for access, rather than just one. VRAM can manage 2 functions at once, and doesn’t require the system to complete one function before starting the other, so it allows faster operation for the whole video system. VRAM chips enhance graphic performance, of video adapters to speed the creation of on screen images.
(PC World July 1999)
Storage
The main form of data storage in notebook computer is the hard drive. Generally more hard disk space is better, but large hard drives, can become filled and offer slower performance. Other storage devices are available such as a diskette drive and a zip drive. So you are given the opportunity to save hard disk space through these devices. (PC World July 1999)
Multimedia
Multimedia facets of notebook computers include, working together to provide good audio and video capabilities. The components involved are CD-ROM, DVD- ROM drive, speakers, display, sound adapter card, and video adapter card. This factor is of no importance, unless it’s important to the consumer. With multimedia components