## Describe the vertical frequency or cycle, Computer Engineering

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Q. Describe the Vertical Frequency or cycle?

Like a Fluorescent lamp, the screen has to repeat same image many times per second to display an image to user. The frequency of this repetition is known as Vertical Frequency or Refresh Rate.

If the resolution produced by the video card and monitor resolution is properly matched you get a good quality display.  Though the actual resolution attained is a physical quality of monitor.  In colour systems resolution is limited by Convergence (Do the beam of the 3 colours converge exactly on same dot?) and Dot Pitch. In monochrome monitors resolution is only limited by the highest frequency signals the monitor can handle.

#### Prove boolean identities using boolean algebra, Prove the following Boolean...

Prove the following Boolean identities using the laws of Boolean algebra: ABC + AB ‾C + ABC ‾ = A(B + C) Ans. ABC+AB'C+ABC'=A(B + C) LHS AC(B+B')+AB(C+C') OR  AC+AB OR  A(B

#### Draw a schematic for managing dynamic storage allocation, Draw a simple sch...

Draw a simple schematic for managing dynamic storage allocation. A simple schematic for managing dynamic storage allocation is as follows: Block size pointe

#### Show the foundation of ALU design, Q. Show the foundation of ALU design? ...

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#### Signaling - universal serial bus , Signaling - Universal Serial Bus: U...

Signaling - Universal Serial Bus: USB supports following signaling rates: o   A low speed rate of 1.5 Mbit/s is defined by USB 1.0. This is so much similar to "full speed"

#### What is mini frame size where propagation speed is 200 m µs, A CSMA/CD bus ...

A CSMA/CD bus spans a distance of 1.5 Km. If data is 5 Mbps, What is minimum frame size where propagation speed in LAN cable is 200 m µs. Usual propagation speed in LAN cables

#### What is the function of an ip packet screening router, Function of an IP Pa...

Function of an IP Packet Screening Router: A screening router is the most basic type of firewall and uses only the packet filtering capability to control and monitor network tr

#### Show the major benefits of microprocessor, Q. Show the Major benefits of mi...

Q. Show the Major benefits of microprocessor? Microprocessor is a complete CPU on a single chip. The major benefits of microprocessor are:  Powerful butCompact; can

#### Failures, FAILURES Since reliability engineering is focused on the surv...

FAILURES Since reliability engineering is focused on the survivability or absence of failures, it is more concerned about failures,  understanding  their causes and defining re

#### De morgan''s laws - artificial intelligence, De Morgan's Laws Continuin...

De Morgan's Laws Continuing with the relationship between  ∧  and  ∨ , we can also use De Morgan's Law to rearrange sentences involving negation in conjunction with these conne

#### Explain the different fields of an instructions, Explain the significance o...

Explain the significance of different fields of an instruction An instruction is a command given to a computer to perform a particular operation on some given data and the form