18 Questions
What type of memory do microcontrollers typically use for storing programs?
Flash memory
Why do microcontrollers naturally gravitate towards a Harvard architecture?
Due to the distinct memories (program stored in flash memory, data stored in RAM) and separate busses for faster access.
What does CISC stand for in the context of computer processors?
Complex instruction set computer
What is the defining characteristic of RISC processors?
Reduced instruction set
Which type of processor architecture typically has a large instruction set with many formats?
CISC
In terms of instruction cycles, which type of processor architecture generally executes instructions in a single cycle?
RISC
What are some examples of CPUs that commonly use embedded systems?
PowerPc, ARM CPUs, Qualcomm
Differentiate between CIS and RISC in the context of embedded systems.
CIS (Complex Instruction Set) vs. RISC (Reduced Instruction Set) architectures
What type of microprocessor is the ATmega32?
ATmega32 is a microprocessor
Explain the difference between a microprocessor and a microcontroller.
Microprocessor is for general-purpose computing, while microcontroller is for specific tasks
Why are PowerPc, ARM CPUs, and Qualcomm popular choices for embedded systems?
Due to their power efficiency and suitability for mobile devices
What is the main reason why PCs are based on DRAM?
Lower cost as bigger RAM is needed
Define ROM in the context of embedded systems.
Read Only Memory is non-volatile memory where data can only be read, not written.
What makes ROM different from RAM?
ROM is non-volatile and data can only be read, while RAM is volatile and allows both read and write operations.
Explain the purpose of ROM in embedded systems.
ROM is used to store program codes and permanent data needed to initialize and operate embedded systems.
What type of memory device is ROM based on?
Floating Gate Mosfet
Why is ROM suitable for storing programs and data in embedded systems?
ROM retains its contents even after power is switched off, ensuring that program codes and permanent data are not lost.
Test your knowledge about how microcontrollers store programs in flash memory and data in separate RAM memory, leading to the Harvard architecture. Explore the advantages of a Harvard architecture with distinct memories and separate buses for faster access.
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