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What is the definition of computer program?
A combination of computer instructions and data definitions that enable computer hardware to perform computational or control functions.
What does the CPU control and what does it not control?
The CPU is the main control of the computer. It controls all of the software, as it performs the calculations and logic functions. It does not control the hardware, however.
What are four primary functions of Hardware?
Input, output, PROCESS, and Storage
Does every program have access to all hardware?
No, most programs have no access at all to hardware. They call device drivers through the OS to perform input and output. These device drivers are custom written to access the hardware for the device they control. Modern computers use privileged instructions that cause an error if a user program tries to execute them to access hardware. The device drivers have the privilege to execute these instructions and access hardware.
What is a series of numbered instructions that control the machine's movements and functions to create a part?
A series of numbered instructions that control a machine's movements and functions to create a part is known as a CNC (Computer Numerical Control) program. This program consists of G-code and M-code commands that dictate the machine's actions, such as cutting, drilling, or milling. By following these precise instructions, the machine can accurately produce components to specified dimensions and tolerances.
How does a microprocessor work in a microwave?
embedded control computerIt is easier to write a computer program handling all these various functions than to design a dedicated hardware control system to do it.
Which of the following cell structures functions as the control center of the cell?
The nucleus functions as the control center of the cell. It contains the cell's genetic material, DNA, which carries the instructions for the cell's activities and regulates gene expression.
What are essential elements of CPU and their functions?
The essential elements of a CPU include the Arithmetic Logic Unit (ALU), Control Unit (CU), and registers. The ALU performs all arithmetic and logical operations, while the Control Unit directs the operation of the processor and coordinates the execution of instructions. Registers are small, high-speed storage locations that temporarily hold data and instructions being processed, enabling quick access and execution. Together, these components facilitate the CPU's primary role in executing instructions and processing data.
Where do the control unit's instructions come from?
The control unit's instructions originate from the system's memory, specifically from the program stored in the main memory (RAM). These instructions are fetched from memory as part of the instruction cycle and then decoded and executed by the control unit to manage the operations of the CPU and coordinate with other components of the computer. Additionally, the control unit may also receive control signals from the CPU's internal registers and other hardware components.
What is used to change motherboard settings to find a boot device and contains instructions for running essential hardware before an OS is started?
Control panel
What three things do electric hardware devices need in order to functions?
Each hardware device needs a method to talk to the CPU, software to control it, and electricity to power it.
Is memory unit parts of control unit?
No, the memory unit is not a part of the control unit. The memory unit is a separate component in a computer system that stores data and instructions temporarily or permanently. The control unit, on the other hand, is responsible for directing the operation of the processor and managing the flow of data between the CPU, memory, and other peripherals. While they work closely together, they serve distinct functions within the computer architecture.
