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CS SECTION 4
Questions on Section 4
| Question | Answer |
|---|---|
| What is a system unit? What is is made of? | Case that contains electronic components of the computer used to process data. The case is made of metal or plastic and protects the internal electronic components from damage. |
| What is a motherboard? what does it contain? why is important? | the main circuit board of the system unit(system board). Electronic components attach to the motherboard; others are built into it. It's important b/c on a typical desktop computer it contains the losts for memory, adapter cards, and processor chip. |
| What is a chip? What does it contain? | It's a piece of semi conducting material, usually silicon, on which intergrated circuits are etched. The intergrated circuit contains many microscopic pathways capable of carrying electrical current. |
| What is the processor? why is important? | It interprets and carries out the basic instructions that operate a pc. 1. greatly impacts overall computing power 2. manages most of a pcs operation |
| What are the similarities and differences among 1. multi-core processors, 2.dual-core processors, and a 4. quad-core processor? | 1. multi-core: is a chip with two or more separate processor cores. Types of multi-cores: 2. contains two separate processor cores. 3. contains 4 separate processor cores. |
| What is the control unit? how does it work? | 1. component of the processor that directs and coordinates most of the operations in the pc. 3. interprets each instruction issued by program then initiates action to carry the instruction. |
| what is the aithmetic logic unit? how does it work? | Another componen of the processor, performs arithmetic, comparison etc. a. Arithmatic involve basic calcs. b. comparinson involve comparing one data item w/ another to determine whether is greater, than, equal or less than the other item. |
| What is the machine cycle? what are the steps int the cycle? | 4 basic operations the processor repeats for every instruction. 1. fetching, 2. decoding, 3. executing and if necessary 4. storing. |
| what is a system clock? define clock speed. | 1. small quarts crystal circuit that controls the timing of all computer operations. it generates electronic pulses, or ticks that set the operationg pace of compononest of the sytem unit. 2. pace of system clock, measured by the # of ticks per second. |
| what is a byte? how does a series of bits represents data? | A bit is the smallest unit of data a pc can process. 8 bits grouped together as a unit form a byte. |
| what is the memory? describe how bytes and addressable memory work? | memory stores instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data (information). |
| what are the different memory sizes? | |
| what are the various types of memory? | |
| what is RAM? how does it work? where does it reside? | |
| what is RAM Configuration? why is important? | |
| what is CACHE>? what are the various types OF CHACHE? | |
| what is ROM? what does it do? | |
| what is flash memory? when are they used? | |
| what is CMOS? how do they work? | |
| what is access time? how does it work? | |
| what are expansion slots and adapter cards? | |
| what are removable flash memories? what are some examples of removable flash memories? | |
| What is the difference between a port and a connector? | |
| what is the difference between usb ports and other ports? | |
| what are some other ports? define and describe them? | |
| what are port replicators and docking stations? how do they work? | |
| what are buses ? what is the purpose of a bus? | |
| what are bays? why are they important? | |
| what is the power supply? what are its parts? | |
| how to clean a pc? | |
| what are the typical electronic components housed in the system unit of a personal pc? | the processor, memory, adapter cards, drive bays, and power supply |
| what is a microprocessor? | refers to a personal computer processor chip. It contains all functions of the processor are often on a single chip. |
| what is a processor core? how does the operationg system view processor multi-processor cores? | contains the circuitry necessary to excecute instructions. chips come in multi-cores. 2. the operating system view each processor core as a seperate processor. |
| are multi-core processor faster than single-core processors? | no, but they increase overal performance. It does not double speeds but can reach those speeds. multi-core processor are more energy efficient. |
| what does a processor contain? | 1. control unit 2. an arithmatic logic unit (ALU. They work together to perform processing operations. |
| define fetching, decoding, executing, and storing. | 1. fetching is the process of obtaining an instruction or data item from memory. 2. decoding: process of translating the instruction into signals othe pc can execute. 3. executing carries out commands. 4. storing, writes results to memory. |
| how do personal pc processor run clock speeds? define gigaherts. | in gigaherts range. Giga equals 1 billion and herts is one cycle per second. |
| what is the binary system? (used to represent data) | system that has 2 unique digits, 0 and 1, called bits. |
| how does a byte represent data? | provides enough combinations of 0s and 1s to rep 256 INDIVIDUAL characters. characters include #'s, uppercase and lowercase letters fo the alphabet etc. |
| what is the pattern coding scheme? | the combinatios of 0s and 1s bits that rep. characters. |
| what does ASCII stand for? Whats the purpose of ASCII? | American Standard Code for Information Intercharge. It's the most widely used coding scheme to represent data,. |
| why are coding schemes important? how does it work to represent data? | They are important b/c it allows humans to interact with digital pcs that only processes bits. x |
| what are the 3 basic categories of items stored in memory? | 1. operating system and other system software that control or maintain the pc and its devices. 2. app. programs that carry out a specific task ex. word; 3 the data being processed by app. programs and resulting in information. |
| what is the store concept? | the role of memory to store both data and programs . |
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fsuarez
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