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3 years ago

8. Explain what the following spredications of a monitor refer to their significance for the user and how

Computers and Technology

1 answer:

Maslowich3 years ago

8 0

Answer:

A computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the visual display, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED backlighting having replaced cold-cathode fluorescent lamp (CCFL) backlighting. Previous monitors used a cathode ray tube (CRT). Monitors are connected to the computer via VGA, Digital Visual Interface (DVI), HDMI, DisplayPort, USB-C, low-voltage differential signaling (LVDS) or other proprietary connectors and signals.

Originally, computer monitors were used for data processing while television sets were used for entertainment. From the 1980s onwards, computers (and their monitors) have been used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and computer monitors, has changed from 4:3 to 16:10, to 16:9.

Modern computer monitors are easily interchangeable with conventional television sets and vice versa. However, as computer monitors do not necessarily include integrated speakers nor TV tuners (such as Digital television adapters), it may not be possible to use a computer monitor as a TV set without external components.[1]

History

Early electronic computers were fitted with a panel of light bulbs where the state of each particular bulb would indicate the on/off state of a particular register bit inside the computer. This allowed the engineers operating the computer to monitor the internal state of the machine, so this panel of lights came to be known as the 'monitor'. As early monitors were only capable of displaying a very limited amount of information and were very transient, they were rarely considered for program output. Instead, a line printer was the primary output device, while the monitor was limited to keeping track of the program's operation.[2]

Computer monitors were formerly known as visual display units (VDU), but this term had mostly fallen out of use by the 1990s.

Technologies

Further information: Comparison of CRT, LCD, Plasma, and OLED and History of display technology

Multiple technologies have been used for computer monitors. Until the 21st century most used cathode ray tubes but they have largely been superseded by LCD monitors.

Cathode ray tube

Main article: Cathode ray tube

The first computer monitors used cathode ray tubes (CRTs). Prior to the advent of home computers in the late 1970s, it was common for a video display terminal (VDT) using a CRT to be physically integrated with a keyboard and other components of the system in a single large chassis. The display was monochrome and far less sharp and detailed than on a modern flat-panel monitor, necessitating the use of relatively large text and severely limiting the amount of information that could be displayed at one time. High-resolution CRT displays were developed for the specialized military, industrial and scientific applications but they were far too costly for general use.

Some of the earliest home computers (such as the TRS-80 and Commodore PET) were limited to monochrome CRT displays, but color display capability was already a standard feature of the pioneering Apple II, introduced in 1977, and the speciality of the more graphically sophisticated Atari 800, introduced in 1979. Either computer could be connected to the antenna terminals of an ordinary color TV set or used with a purpose-made CRT color monitor for optimum resolution and color quality. Lagging several years behind, in 1981 IBM introduced the Color Graphics Adapter, which could display four colors with a resolution of 320 × 200 pixels, or it could produce 640 × 200 pixels with two colors. In 1984 IBM introduced the Enhanced Graphics Adapter which was capable of producing 16 colors and had a resolution of 640 × 350.[3]

By the end of the 1980s color CRT monitors that could clearly display 1024 × 768 pixels were widely available and increasingly affordable. During the following decade, maximum display resolutions gradually increased and prices continued to fall. CRT technology remained dominant in the PC monitor market into the new millennium partly because it was cheaper to produce and offered to view angles close to 180°.[4] CRTs still offer some image quality advantages[clarification needed] over LCDs but improvements to the latter have made them much less obvious. The dynamic range of early LCD panels was very poor, and although text and other motionless graphics were sharper than on a CRT, an LCD characteristic known as pixel lag caused moving graphics to appear noticeably smeared and blurry.

Explanation:

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just olya [345]

Answer:

The correct answer is B. BLOB.

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3 years ago

18) choose which article title would most likely be described by the database subject headings victims of famine, ireland, histo

Lunna [17]

I think the correct answer from the choices listed above is option B. The <span>article title that would most likely be described by the database subject headings victims of famine, ireland, history would be </span><span>''how many irish potato famine deaths? towards coherence of the evidence" Hope this answers the question.</span>

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3 years ago

Write a loop that reads positive integers from standard input and that terminates when it reads an integer that is not positive.

Paraphin [41]

Answer:

The program to this question as follows:

Program:

#defining variable and assign value

odd=0

even=0

i=1

print('Input 0 after inserting all number: ') #print message

while i>0: #define loop for check inserting and add all number

i=int(input()) #input value by user end

if (i< 0): #check value is not positive

break

if ((i % 2)==0and(i>0)): #check even number condition

even=even+i #add even numbers

if ((i % 2)!=0and(i>0)): #check odd number condition

odd=odd+i #add odd numbers

print ('Sum of Even number:',even,'and','Sum of Odd number:',odd) #print value

Output:

Input 0 after inserting all number:

Sum of Even number: 2 and Sum of Odd number: 16

Explanation:

In the above python program, three variable is defined, that is "even, odd and i", in which "even and odd" variable assign value that is "0", and the variable i is used for inserting elements from user. In the next line a while loop is defined that inserts numbers in variable "i", in this loop, 3 if block is used that can be defined as follows:

In first if block variable "i", checks that value is non-positive number if this condition is true, it will break the loop.
In second if block this block check even number condition and add in even variable.
In third, if block this block check odd number condition and add in odd variable.

End of the loop we use print function that prints the sum of even numbers and odd numbers.

3 0

3 years ago

What is wrong with each of the following code segments? int[] values; for (int i = 0; i < values.length; i++) { values[i] = i

tino4ka555 [31]

Answer:

values have been declared but not initialized nor allocated memory. So you are not allowed to use "values.length"

7 0

2 years ago

A range in which a measuring instrument or controller does not respond is the

cricket20 [7]

Answer:

Dead band

Explanation:

In Instrumentation, dead band is defined as a range in which a measuring instrument or controller does not respond. It is also known as the neutral zone or dead zone and it is usually caused by packing friction or unbalanced forces.

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3 years ago