The speed of a Central Processing Unit (CPU) is commonly described using its clock frequency, which indicates how many clock cycles the processor completes in one second. This frequency is measured in hertz (Hz). For modern processors, the values are... Read More
The speed of a Central Processing Unit (CPU) is commonly described using its clock frequency, which indicates how many clock cycles the processor completes in one second. This frequency is measured in hertz (Hz). For modern processors, the values are usually expressed in megahertz (MHz) or gigahertz (GHz).
Megahertz (MHz) represents one million cycles per second, while gigahertz (GHz) represents one billion cycles per second. For example, a processor operating at 3.5 GHz has a clock frequency of 3.5 billion cycles per second. These units make it easier to describe and compare processor clock frequencies without writing very large numbers.
The correct answer is C. Both A and B, because both megahertz and gigahertz are units used to express CPU clock speed. Older processors were often described in megahertz, whereas many modern CPUs operate at frequencies measured in gigahertz.
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