What are "Motherboard functions"?

The motherboard of any computer that follows the IBM design scheme performs several major fuctions.at the most basic level it is the physical foundation of the computer.it holds the expansion boards in place,provides firm territory to attach connections to external circuit elements,and provides the base of support for the cerntral electronics of the computer. Electrically,the circuitry etched upon it includes the brain of the computer and the most important elements required to nourish that brain.This circuitry determines the entire personality of the computer how it functions,how it reacts to your every keystroke,what it does.

What is the "System Board common features" you want to know about it?

Because there are so many makers of compatible computers,different system board designs number into the hundreds, therefore, they would be difficult to discuss with any depth.however,understanding compatibles becomes more manageable once you understand
that one of the biggest segments of the industry are the companies that serve as OEMSs.there are fewer system boards designs in use than you might suspect.more ever all of them a great tribute to the IBM products from which they are mostly copied.

What are planar boards? you know the real information about it?

In the personal system /2 line the motherboard is much more like a true single board micro computer which has an added expansion bus,one so radically different from its predecessors that IBM describes its expansion bus as a channel .to the function contained on pc-style system boards,the ps/2 adds video circuitry input and output ports,and floppy disk control
circuity.
IBM highlights the updates and upgrades that seprate the ps/2 motherboards from those of previous computers by referring to the motherboards of ps/2s as planar boards,often dropping the surname the new term is both descriptive the flat board is topologically a plane and in common use to describe similar assemblies in other electronic applications(as well as other computers) the term was sometimes used by IBM to describe the system boards of previous computers and the term "system  board"is occasionally used to describe ps/2 mother boards,planar appears to be the consistently preferred choice for ps/2 motherboards, however.
Although labeled by just two descriptive terms,IBM mother boards are quite diverse every ps/2 model including those with  similar electronic abilities like the models 50 and 60 has a distinctively different planar.even those machines with the  same model number may have different system boards,for instance each of IBM's three models 70 has its own planar board  design  PCs,too use variant systems boards for each model except one,only the xt and portable personal computer share an identical system board.PCs on the other hand have gone through two major design changes..

Some new information about the The acquisition angle...

Perhaps the best way of accomplishing their goals would be with the straightforward strategy of acquisition.IBM could simply buy a manu fatrurer of small computers and intergrate the company and its products into the IBM corporate  monolith (much as IBM later strode into the communications business by buying Rolm corporation and gradually bad the company into the big blue mainstream). The obvious choice would have been apple however,apple was not IBM's type of target,apple had not yet aimed its products at business applications it was still supplying hobbyists not an IBM market. Nor did apple have much of a track record as a company and computer manufacturer of course the same could be said about the company that had begun its life by building small computers,The industry it self was not that old so the companies in the
industry were necessarily young,nevertheless ,apple was a small part up company with no track record and according to  normal business sense,a dubious future moreover,its sole product the apple 11 just was not a very good design. acquiring radio shack was never an alternative,although radio shack and its parent tandy corporation had a proven trak  record of profits computers had little to do with that,at the time computers were a small part of the sales of the mass retailer,in simple terms IBM would have had to buy a restaurant to get a cup coffee. The other makers of small computers were even less attractive.IBM really did not need to own some one's garage optimistically called a microcomputer factory...

What is Tandy radio shack and CP/M if you wan to know about these computer things than read informatin below

Design camp number two rallied under the radio shack flag.The familiar corner store vendor of everything from batteries  and toys to watches and telephones added small computers to its wide range of offerings by producing a number of machines  based on different technologies microprocessors and operating systems. The wide variety of the Radio shack products was intended to appeal to the widest market The leader all the time of the introduction of IBM's First machine was the TRS 80,A desktop computer combining monitor,keyboard and electronics into a  single box ,all built around a z 80 microprocessor both cassette and floppy disk storage was available the later using the TRS DOS (widely known as trash DOS to both its friend and detractors). The nickname applied to the model designation is one of the reasons this computer brand has officially disappeared from the market after years of trashy jokes.Radio shack's corporate parent tandy corporation elected to pull not only the TRS designation but also the radio shack label from its computer products,and instead substituted its own name and less allusive model numbers.
Among the virtues of the TRS 80 Were it ability to show 80 coloumn text in upper and lower case characters.among its  biggest drawbacks were its styling,which was of the sort that appealed to those who found aesthetic ecstasy in the  cadillac tail fins of a generation earlier.it was all rounded curves and metalized plastic,styling that might appeal more to buck rogers than to a businessman.

CP/M : The third group of small computers huddled around the CP/M operating system and acronym for controm program for Micro computers.CP/M linked the popluar and powerful 8080 and z80 microproccessors with flexible dsik drives.its low cost and usefulness led to its wide use and its emergence as a standard. CP/M baed computers typically allowed the use of 80 coloumn text with lowercase characters in a text oriented display that usually ran through a teletype interface.The teletype interface was designed for computers constructed from separate  terminals and central processing units which communicated through thin wires one bit at a time (serially).. The combination of microprocessor and operating system yielded enough power to handle many business chores,from word processing to book keeping,it was exactly what was needed in business and consequently CP/M computers emerged as the  business standard among desktop machines.in the early 80's more business oriented software (which often consisted of little more than a few dozen lines of basic code)was available for CP/M than that of any other computer operating environment.

Have your information about "origins of the Pc"?

This information is about only origins of the pc and this book would not exist not would the personal computer industry in its present form ,where it not for a number of seemingly arbitrary but practical decisions made at the IMB corporation entry systems division in boca raton Florida hust as the decade of the 1980 's was dawning the culmination of that decision making came on august 12,1981,with the introduction of the IMB PC,today all personal computer hardware benefits and suffers from the effects and ramifications of the original design.
A full understanding of how a personal computer works,how it can be augmented how it can be altered must begin with a recognition of the underlying concepts implicit in that initial design. all too often elements of the design of a personal computer seem overly restricting without real purpose one thing is for certain the pc  did not spring as a fully armed product for the head of the entry systems division .in fact even after the first machines and been ushered into the bright  daylight of public of public scrutiny even IBM did not know hat it had wrought .The immediate success of the PC led to demand outrunning supply shortages and an unbelievable windfall to authorized     IBM dealers who found a little silicon could be worth its weight in Gold...

What is the central processing unit (CPU) and arithmetic and logic unit (ALU),you have information about it?

A CPU is the electronic brian of the computer it consists of three main components namely,arithmetic and logic unit (ALU) control unit (CU) and main memory unit..now we tell you about the arithmetic and logic unit (ALU),This is the section of the CPU where actual data processing takes place all arithmetic and logical operations are performed in this part of the cpu.arithmetic operations such as add ,subtract multiply and devide are performed in the arithmetic  section of the (ALU) .the logic circuits in the ALU are generally used to compare two numbers by subtracting one number from the over.the resultant sign of the difference tells the processor whether the first number is greater or the second this result of comparison further directs the program to branch accordingly.Apart from the numeric data,alphabetic data also may be compared according to an assigned sequence .in order to perform these arithmetic and logic operations ,ALU as has got  multifunction circuits which can perform these operations,here we shows a block diagram of these circuits .all these  operations are subject to the command received from the control unit.ALU responds to the instructions received by analysing the instructions immediatly .the operands required by the instructions are fetched from the given addresses and are set to the appropriate unit of ALU in this processing . ALU contains special purpose memory locations called registors .these registers are used of storing arithmetic logic  commands and their operands .one such ALU register is called accumulator which is very frequently used.the operations like add subtract multiply,divide and compare can be performed on the contents of accumulator...