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7.The process known as the __________ cycle is used by the CPU to execute instructions in a program.a.decode-fetch-executeb.decode-execute-fetchc.fetch-decode-executed.fetch-execute-decodeANS: C
8.Which language is referred to as a low-level language?
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9.The following is an example of an instruction written in which computer language?
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10.The encoding technique used to store negative numbers in the computer's memory is called
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11.The __________ coding scheme contains a set of 128 numeric codes that are used to representcharacters in the computer's memory.a.Unicodeb.ASCIIc.ENIACd.two's complementANS: B
12.The smallest storage location in a computer's memory is known as a
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13.What is the largest value that can be stored in one byte?
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b.128c.8d.65535ANS: A14.The disk drive is a secondary storage device that stores data by __________ encoding it onto aspinning circular disk.
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15.A __________ has no moving parts and operates faster than a traditional disk drive.a.DVD driveb.solid state drivec.jumper drived.hyper driveANS: B
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What Does Machine Cycle Mean?
A machine cycle consists of the steps that a computer’s processor executes whenever it receives a machine language instruction. It is the most basic CPU operation, and modern CPUs are able to perform millions of machine cycles per second. The cycle consists of three standard steps: fetch, decode and execute. In some cases, store is also incorporated into the cycle.
Techopedia Explains Machine Cycle
The machine cycle is the most basic operation that a computer performs, and in order to complete menial tasks such as showing a single character on the screen, the CPU has to perform multiple cycles. The computer does this from the moment it boots up until it shuts down.
The steps of a machine cycle are:
- Fetch – The control unit requests instructions from the main memory that is stored at a memory’s location as indicated by the program counter [also known as the instruction counter].
- Decode – Received instructions are decoded in the instruction register. This involves breaking the operand field into its components based on the instruction’s operation code [opcode].
- Execute – This involves the instruction’s opcode as it specifies the CPU operation required. The program counter indicates the instruction sequence for computer. These instructions are arranged into the instructions register and as each are executed, it increments the program counter so that the next instruction is stored in memory. Appropriate circuitry is then activated to perform the requested task. As soon as instructions have been executed, it restarts the machine cycle that begins the fetch step.