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Q. What is Pure semiconductors?
Pure semiconductors, known as intrinsic semiconductors, have very few charge carriers and may hence be classified as almost insulators or very poor electrical conductors. However, by adding (through a process known as doping) tiny controlled amounts of impurities (such as boron, gallium, indium, antimony, phosphorus, or arsenic), a semiconductor can be made to contain a desired number of either holes or free electrons and is then known as extrinsic (impure) material. A p-type semiconductor contains primarily holes, whereas an n-type semiconductor contains primarily free electrons. While holes are the majority carriers in a p-type material, it is possible to inject electrons artificially into p-type material, in which case they become excess minority carriers. Minority carriers do play a vital role in certain devices. The doping substance is called an acceptor when the extrinsic semiconductor is the p-type with holes forming the majority carriers and electrons forming the minority carriers. The doping substance is known as the donor when the extrinsic semiconductor is the n-type with free electrons forming the majority carriers and holes forming the minority carriers. Both p- and n-type semiconductors are vitally important in solid-state device technology. Diodes, transistors, and other devices depend on the characteristics of a pn-junction formed when the two materials are joined together as a single crystal.
What is Server in SAP terminology? A component can having of one process or a group and is then known as the server for the respective service.
DATAFLOW COMPUTING A substitute to the Von Neumann model of calculation is dataflow computation model. In the dataflow model, control is tied to flow of data. Order of instruct
Q. Types of messages? The messages can be of many types. A specific field of all messages may be reserved to signify message type. The message passing primitives are like thi
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Illustrate 16-bit ISA? Compare it with 8-bit ISA bus. The only difference between 8 and 16-bit ISA bus is that an extra connector is attached behind the 8-bit connector. 16-b
What is the command used to replace many characters in Vi Editor? Ans) For replace most of the character in vi editor press esc key and then press R for change many character.
The most useful feature of an expert system is the high level expertise it provides to aid in problem solving. This expertise can represent the best thinking of the top
What are the advantages of code optimization? Code optimization tends at enhancing the execution efficiency of a program. It is achieved in two manners. Redundancies in a progr
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The scope of the experts system is very limited. It cannot work outside the field it is being used. The users knowledge is required to adjust to new situation. To reduce
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