WorksheetsComputer Memory and Logic Devices Quiz
Total questions: 20
Worksheet time: 10mins
What is the difference between primary memory and secondary memory in a computer or digital device?
Primary memory is faster but smaller in capacity while secondary memory is slower but larger in capacity
Primary memory is non-volatile while secondary memory is volatile
Primary memory is used for long-term storage while secondary memory is used for short-term storage
Both a and b
What is the process of saving information in memory called?
Storing
Reading
Writing
Retrieving
How is data read from SRAM?
The bitline and its inverse are precharged to 0 before setting WL=1
The bitline and its inverse are precharged to Vdd before setting WL=1
The bitline and its inverse are precharged to 0 after setting WL=1
The bitline and its inverse are precharged to Vdd after setting WL=1
What is the function of the CS (chip select) line in the 4X8 memory block design?
To enable and disable the whole chip
To store data in the D-flipflops
To select a particular memory location
To select a particular column of D-flipflops
What is the relationship between the address lines A0 and A1 and the selection lines in the 4X8 memory design?
The address lines and selection lines have no relationship
The address lines are dependent on the selection lines
The address lines and selection lines are independent of each other
The selection lines are dependent on the input given to the address lines
What type of flip flop is used in the 4X8 memory block designed using 2:4 Decoder?
D flip flop
T flip flop
JK flip flop
SR flip flop
What is a Programmable Logic Device (PLD)?
A basic electronic device with simple functions
A reconfigurable electronic device made up of AND gate arrays, OR gate arrays, and interconnection fuses used to implement complex functions
A device that cannot be programmed to perform different tasks
A device that does not have the ability to reduce power requirements for the design
What is the purpose of a PROM in electronic devices?
Store data for advanced memory
Store complex information
Store data temporarily
Store low-level device drivers
How are the settings of each bit in a PROM secured?
By a fuse
By a switch
By a magnet
By a capacitor
What is the main advantage of using a Programmable Logic Array (PLA) in electronic circuits?
It allows customization of logic functions by connecting fixed AND gates to programmable OR gates
It can generate only a limited number of minterms
It is not flexible in operation
It is not suitable for implementing a logic function of multiple variables and outputs
What is the main function of the AND matrix in a Programmable Logic Array (PLA)?
To reduce the loading effect of inputs
To generate minterms
To implement a logic function of multiple variables and outputs
To provide non-inverted and inverted inputs
How many input buffers are there in a PLA for M inputs?
M
2M
M/2
2/M
What is the main difference between a Programmable Logic Array (PLA) and a Programmable Array Logic (PAL)?
A PAL has a fixed AND array while a PLA has a programmable AND array
A PAL has a programmable OR array while a PLA has a fixed OR array
A PAL generates outputs in a product-of-sum form while a PLA generates outputs in a sum-of-product form
A PAL is not suitable for generating basic logic functions while a PLA is suitable for generating basic logic functions
What is the advantage of using a programmable AND array in PAL?
It increases the number of product terms generated
It reduces the number of product terms generated
It eliminates the need for OR gates
It reduces the number of fuse links used
What is the fixed component in the PAL?
OR array
AND array
Inputs
Fuse links
How is the number of fuse links calculated in a PAL?
By multiplying the number of inputs and outputs
By multiplying the number of inputs and product terms
By dividing the number of inputs and outputs
By dividing the number of inputs and product terms.
What is the main advantage of using Complex Programmable Logic Devices (CPLDs) compared to Programmable Array Logic (PALs) and Programmable Logic Arrays (PLAs)?
CPLDs offer greater integration density compared to PALs and PLAs
CPLDs have less integration density compared to PALs and PLAs
CPLDs have limited size compared to PALs and PLAs
CPLDs are not suitable for larger logic circuits
What is the main function of the tri-state buffer in a Complex Programmable Logic Device (CPLD)?
To store the output of the AND-OR configuration
To select the output of the AND-OR configuration
To connect the chip's pin as either an input or output
To interface the signal from the chip's pin to other macrocells
What is the purpose of using computer aided design (CAD) tools for programming Complex Programmable Logic Devices (CPLDs)?
To transfer the programming file directly from the computer to the CPLD without using any programming unit
To manually specify the required state of the switches in the CPLD
To simplify the process of programming CPLDs by producing a programming file of a fuse map
To eliminate the need of programming file produced by the CAD tool
What is the main advantage of using FPGA in various applications?
Customization
Low complexity design
High volume production
Low power consumption
