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Protec Uk Computers Ltd.

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62 High Street
Spennymoor
County Durham
DL16 6DE


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computers

1. Also called processor. an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Cf. analog computer, digital computer.
2. a person who computes; computist.
1. to determine by calculation; reckon; calculate: to compute the period of Jupiter''''s revolution.
2. to determine by using a computer or calculator.
3. to reckon; calculate.
4. to use a computer or calculator.
5. Informal.to make sense; add up: His reasons for doing that just don''''t compute
1. computer, computing machine, computing device, data processor, electronic computer, information processing system, machine
usage: a machine for performing calculations automatically
2. calculator, reckoner, figurer, estimator, computer, expert
usage: an expert at calculation
The control unit manages the computer''s various components; it reads and interprets the program instructions, transforming them into a series of control signals which activate other parts of the computer. Control systems in advanced computers may change the order of some instructions so as to improve performance.

A key component common to all CPUs is the program counter, a special memory cell that keeps track of which location in memory the next instruction is to be read from.

The control system''s function is as follows—note that this is a simplified description, and some of these steps may be performed concurrently or in a different order depending on the type of CPU:

Read the code for the next instruction from the cell indicated by the program counter.
Decode the numerical code for the instruction into a set of commands or signals for each of the other systems.
Increment the program counter so it points to the next instruction.
Read whatever data the instruction requires from cells in memory . The location of this required data is typically stored within the instruction code.
Provide the necessary data to an ALU or register.
If the instruction requires an ALU or specialized hardware to complete, instruct the hardware to perform the requested operation.
Write the result from the ALU back to a memory location or to a register or perhaps an output device.
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county durham

County Durham is a ceremonial county and unitary district in North East England. The county town is Durham. The largest settlement in the ceremonial county is the town of Darlington. The county has an industrial heritage and its economy was historically based on coal and iron mining. It is an area of regeneration and promoted as a tourist destination.

The ceremonial county borders Tyne and Wear, North Yorkshire, Cumbria and Northumberland and forms part of the North East England region.
The ceremonial county of Durham is administered by four unitary authorities. The ceremonial county has no administrative function, but remains the area to which a Lord-Lieutenant and High Sheriff are appointed.

County Durham . The unitary district was formed on 1 April 2009 replacing the previous two-tier system of a county council providing strategic services and seven district councils providing more local facilities.