Реферат: Macintosh Vs Ibm Essay Research Paper The

you had some sort of typing programming that was on an IBM-Compatible computer that had a

286-12 CPU, you could run that same exact software on one of your newest Pentiums today. So

even after 10 years the same software could be used. This also has it down sides, because that

means we have been using an internal CPU architecture that is at least 20 years old. One thing

that IBM users can look forward to is the advancements that Intel is making with it s CPUs. One

of the latest things that has hit the market is MMX, which allows programs that are more

graphically inclined to run faster, as well as programs that use sound. They already have chips

in the making going by the code name Klamath. These will be a cross form of the current

Pentium Pro chips and the Pentium MMX chips. They should be coming out in 1998, and will

have a MHz rating up to 400. Right now the MMX chips are shipping at 200 MHz and will soon

have one at 233 MHz. Intel is moving very swiftly in bringing us the top of the line technology.

Apple decided to go with a different CPU architecture. IBM created a RISC (Reduced Instruction

Set Computing) CPU that could run faster than the CISC model of the same MHz rating, so a

RISC chip with a MHz rating of 100 could run just as fast as a CISC chip with MHz rating of 133.

Now with the definitions of CISC and RISC you would think that the RISC chip has fewer

instructions, and actually in fact it is just the opposite, but since it started out with fewer

instructions then the CISC chip it kept that name. Now IBM did not want to put it into their own

personal computers because of the compatibility issues. The computer would not be able to use

the current hardware or software, that was being made for the IBM-Compatible computers. So

IBM sought out a company that would be willing to buy their RISC chip, and Apple was the

company they found. Motorola had previously been designing the chips for Apple, but they were

not as fast as IBM so the Macintosh development slowed down in comparison to IBM. IBM could

design RISC chips for Apple with no problem. With this Apple needed to get developers to make

applications made to run specifically for the RISC chip. IBM decided to team up with Motorola

because they were not equipped to put out chips in high volume like Apple needed. Apple had

already been creating a mother board based on the Motorola chip design, so with IBM and

Motorola teaming up they did not have to redesign their mother boards. So now an Apple

computer could run faster than an IBM, in a certain sense. A Macintosh Quadra 40 MHz using

Motorola 68040 chip would be faster than most 486DX-66 MHz CPUs. The reason being is that