COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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CPU stands for Central Processing Unit
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The CPU fetch and decodes instructions
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The speed of the CPU is usually in GHz
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If a CPU has many cores, this slows down the computer.
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The hard disk is part of the CPU.
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Detailed explanation-1: -Your CPU processes many instructions (low-level calculations like arithmetic) from different programs every second. The clock speed measures the number of cycles your CPU executes per second, measured in GHz (gigahertz).
Detailed explanation-2: -Hence, only Statement (A) is correct.
Detailed explanation-3: -A CPU with a clock speed of 3.2 GHz executes 3.2 billion cycles per second. (Older CPUs had speeds measured in megahertz, or millions of cycles per second.) Sometimes, multiple instructions are completed in a single clock cycle; in other cases, one instruction might be handled over multiple clock cycles.
Detailed explanation-4: -One gigahertz is equal to 1, 000 megahertz (MHz) or 1, 000, 000, 000 Hz. Gigahertz is often used to measure central processing unit (CPU) clock speed. In general, higher CPU clock speeds indicate faster computers.