Week 1 Embedded system design
1. An embedded system is always programmable.
a. True
b. False
Ans – b. False
Explanation – Apart from Embedded systems being programmable an Embedded system can also be
hardwired.
2. There can be multiple embedded systems present in a larger system.
a. True
b. False
Ans – a. True
Explanation –Take for example an car (larger system) can have multiple embedded systems present in it for
example - Antilock Braking System(ABS), Engine Control Unit (ECU), Traction Control System etc.
3. An Embedded System differs from General Purpose system in which of the following factor(s)
I. Lower Power Consumption
II. Lower Cost
III. Portable
IV. Multipurpose
a) I
b) I,III
c) III,IV
d) I,II,III
e) I,II,III,IV
Ans –d)I,II,III
Explanation- An Embedded system is used for single purpose whereas a General Purpose System is used for
General purpose. Embedded system is tightly constrained in terms of low cost, low power consumption,
portable and sometimes it must be realtime.
4. Boiler of a Thermal Power Plant is equipped with embedded systems which control and maintain the
temperature and pressure inside the boiler. The Embedded systems must be
a. Soft realtime systems
b. Hard realtime systems
Ans – b. Hard realtime systems
Explanation – Overshooting deadline to complete a task of controlling temperature and pressure can lead to
major catastrophe, that’s why stringent time constraints are present and embedded systems in the above
case must be Hard Realtime embedded system
5. The design activity where operations are mapped to hardware or software is
a. Compilation
b. Scheduling
c. Processor Design
d. Hardware-Software Co-Design
e. None of the above
Ans – d. Hardware-Software Co-Design
Explanation – The hardware/software Co-Design is the activity which is in charge of mapping operations to
the software or to the hardware
6.
If a component is implemented in software then
a. It will be faster
b. It will be Slower
c. It will be Costly
d. None of the above
Ans – b. It will be Slower
Explanation – Designing any component in software leads to the system to be slower as the system has to
process it separately by allocating separate CPU time but on the other hand it leads to the system to be more
flexible as it would able to perform more functions on the programmer’s side.
7.
If a component is implemented in hardware then
a. It will be flexible
b. It will be faster
c. It will be cheaper
d. None of the above
Ans – b. It will be faster
Explanation – Designing a specific component in hardware helps in making that component fast but leads to
more time consumed in designing the hardware parts and hence the increase in cost related to it, and makes
the system less flexible too on programmer’s side.
8.
Placement and Routing task comes under which design step
a. Structural Design
b. Geometrical Design
c. Behavioral Design
d. None of the above
Ans – b. Geometrical Design
Hint – Gajski’s Ychart
Explanation – Placement and Routing task is a part of Geometrical design step as we need to place and route
the structure of circuit obtained in structural design step.
9.
There is no distinction in between data memory and program memory in Harvard Architecture
a. True
b. False
Ans – b. False
Explanation - There is no distinction in between data memory and program memory in Von-Neumann
Architecture but in Harvard architecture they are separate.
10.
A Timer is set to zero and at every clock pulse it counts up and at any point of time we can find out
the time elapsed.
a. True
b. False
Ans – b. False
Explanation - A Counter is set to zero and at every clock pulse it counts up and at any point of time we can
find out the time elapsed.
