1. Define Embedded System. What are the components of embedded system?
An Embedded system is one that has computer hardware with software embedded in it as
one of its most important component.
The three main components of an embedded system are
1. Hardware
2. Main application software
3. RTOS
2. In what ways CISC and RISC processors differ?
CISC RISC
It provides number of addressing
modes
It provides very few
addressing modes
It has a micro programmed unit with a
control memory
It has a hardwired unit
without a control memory
An easy compiler design Complex compiler design
Provide precise and intensive
calculations slower than a RISC
Provide precise and
intensive calculations faster
than a CISC
3. Define system on chip (SOC) with an example
Embedded systems are being designed on a single silicon chip called system on chip.
SOC is a new design innovation for embedded system
Ex. Mobile phone.
4. Give any two uses of VLSI designed circuits
A VLSI chip can embed IPs for the specific application besides the ASIP or a GPP core. A
system on a VLSI chip that has all of needed analog as well as digital circuits.
Eg. Mobile phone.
5. List the important considerations when selecting a processor.
Instruction set
Maximum bits in an operand
Clock frequency
Processor ability
6. What are the types of embedded system?
Small scale embedded systems
Medium scale embedded systems
Sophisticated embedded systems
7. Classify the processors in embedded system?
1. General purpose processor
Microprocessor
Microcontroller
Embedded processor
Digital signal processor
Media processor
2. Application specific system processor
3. Multiprocessor system using GPP and ASSP GPP core or ASIP core
integrated into either an ASIC or a VLSI circuit or an FPGA core integrated with processor unit
in a VLSI chip.
8. What are the important embedded processor chips?
ARM 7 and ARM 9
i 960
AMD 29050
9. Name some DSP used in embedded systems?
TMS320Cxx
SHARC
5600xx
10. Name some of the hardware parts of embedded systems?
Power source
Clock oscillator circuit
Timers
Memory units
DAC and ADC
LCD and LED displays
Keyboard/Keypad
11. What are the various types of memory in embedded systems?
RAM (internal External)
ROM/PROM/EEPROM/Flash
Cache memory
12. What are the points to be considered while connecting power supply rails with embedded
system?
A processor may have more than two pins of Vdd and Vss Supply should separately power the external I/O driving ports, timers, and clock
and From the supply there should be separate interconnections for pairs of Vdd and
Vss pins analog ground analog reference and analog input voltage lines.
13. What is watch dog timer?
Watch dog timer is a timing device that resets after a predefined timeout.
14. What are the two essential units of a processor on a embedded system?
Program Flow control Unit
Execution Unit
15. What does the execution unit of a processor in an embedded system do?
The EU includes the ALU and also the circuits that execute instructions for a program
control task. The EU has circuits that implement the instructions pertaining to data transfer
operations and data conversion from one form to another.
16. Give examples for general purpose processor.
Microcontroller
Microprocessor
17. Define microprocessor.
A microprocessor is a single VLSI chip that has a CPU and may also have some other
units for example floating point processing arithmetic unit pipelining and super scaling units for
faster processing of instruction.
18.When is Application Specific System processors (ASSPs) used in an embedded system?
An ASSP is used as an additional processing unit for running the application specific
tasks in place of processing using embedded software.
An Embedded system is one that has computer hardware with software embedded in it as
one of its most important component.
The three main components of an embedded system are
1. Hardware
2. Main application software
3. RTOS
2. In what ways CISC and RISC processors differ?
CISC RISC
It provides number of addressing
modes
It provides very few
addressing modes
It has a micro programmed unit with a
control memory
It has a hardwired unit
without a control memory
An easy compiler design Complex compiler design
Provide precise and intensive
calculations slower than a RISC
Provide precise and
intensive calculations faster
than a CISC
3. Define system on chip (SOC) with an example
Embedded systems are being designed on a single silicon chip called system on chip.
SOC is a new design innovation for embedded system
Ex. Mobile phone.
4. Give any two uses of VLSI designed circuits
A VLSI chip can embed IPs for the specific application besides the ASIP or a GPP core. A
system on a VLSI chip that has all of needed analog as well as digital circuits.
Eg. Mobile phone.
5. List the important considerations when selecting a processor.
Instruction set
Maximum bits in an operand
Clock frequency
Processor ability
6. What are the types of embedded system?
Small scale embedded systems
Medium scale embedded systems
Sophisticated embedded systems
7. Classify the processors in embedded system?
1. General purpose processor
Microprocessor
Microcontroller
Embedded processor
Digital signal processor
Media processor
2. Application specific system processor
3. Multiprocessor system using GPP and ASSP GPP core or ASIP core
integrated into either an ASIC or a VLSI circuit or an FPGA core integrated with processor unit
in a VLSI chip.
8. What are the important embedded processor chips?
ARM 7 and ARM 9
i 960
AMD 29050
9. Name some DSP used in embedded systems?
TMS320Cxx
SHARC
5600xx
10. Name some of the hardware parts of embedded systems?
Power source
Clock oscillator circuit
Timers
Memory units
DAC and ADC
LCD and LED displays
Keyboard/Keypad
11. What are the various types of memory in embedded systems?
RAM (internal External)
ROM/PROM/EEPROM/Flash
Cache memory
12. What are the points to be considered while connecting power supply rails with embedded
system?
A processor may have more than two pins of Vdd and Vss Supply should separately power the external I/O driving ports, timers, and clock
and From the supply there should be separate interconnections for pairs of Vdd and
Vss pins analog ground analog reference and analog input voltage lines.
13. What is watch dog timer?
Watch dog timer is a timing device that resets after a predefined timeout.
14. What are the two essential units of a processor on a embedded system?
Program Flow control Unit
Execution Unit
15. What does the execution unit of a processor in an embedded system do?
The EU includes the ALU and also the circuits that execute instructions for a program
control task. The EU has circuits that implement the instructions pertaining to data transfer
operations and data conversion from one form to another.
16. Give examples for general purpose processor.
Microcontroller
Microprocessor
17. Define microprocessor.
A microprocessor is a single VLSI chip that has a CPU and may also have some other
units for example floating point processing arithmetic unit pipelining and super scaling units for
faster processing of instruction.
18.When is Application Specific System processors (ASSPs) used in an embedded system?
An ASSP is used as an additional processing unit for running the application specific
tasks in place of processing using embedded software.
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