Microprocessor vs. dedicated controller: A microprocessor that is designed to handle only specific, dedicated control tasks in an embedded system is also called a ________.
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Amicrocontroller
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Bcalculator
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Claptop microcomputer
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Dworkstation processor
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Edigital signal analyzer
Answer
Correct Answer: microcontroller
Explanation
Introduction / Context:Digital electronics and computer architecture distinguish between general-purpose CPUs and specialized controllers. This question tests whether you know the term used for a processor that handles narrowly defined, dedicated control tasks in embedded products like appliances, vehicles, and IoT devices.
Given Data / Assumptions:
- Device focuses on specific, dedicated tasks.
- Context is embedded system control, not full-scale desktop computing.
- We need the standard industry term.
Concept / Approach:The correct term for a processor packaged with on-chip program memory, data memory, and I/O peripherals intended for dedicated control is “microcontroller.” A general-purpose microprocessor typically requires external memory and peripherals and targets broad computing workloads.
Step-by-Step Solution:
Step 1: Identify that the workload is fixed-function and embedded.Step 2: Map fixed-function control to the component class that integrates CPU + memory + peripherals.Step 3: The industry-standard name is microcontroller (often abbreviated MCU).Verification / Alternative check:Check typical examples: 8051, AVR, PIC, ARM Cortex-M families are microcontrollers used in appliances, toys, and automotive control. These are not marketed as general-purpose laptop/desktop CPUs.
Why Other Options Are Wrong:
Calculator: An application device, not a processor class.Laptop microcomputer: A complete system for general-purpose tasks, not a dedicated controller.Workstation processor: High-performance general-purpose CPU, not embedded-focused.Digital signal analyzer: A measurement instrument, not a controller class.Common Pitfalls:Confusing “microprocessor” and “microcontroller” because both contain a CPU core. The key difference is integration and target use: microcontrollers integrate memory/peripherals for embedded control.
Final Answer:microcontroller