Digital Electronics First Quarter Quiz 1
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CS029 - DIGITAL ELECTRONICS - MONDAY - 4 TO 7 PM - MR. GILBERT D. MANUCDUC
Questions and Answers
- 1.
Basically, what does computers made of?
- A.
Gems
- B.
Sand
- C.
Shells
Correct Answer
B. SandExplanation
Computers are made of sand, or more specifically, silicon. Sand is composed of silicon dioxide, which is the primary component used in the production of computer chips. Silicon is a semiconductor material that is used to create the tiny transistors and circuits that form the basis of computer technology. Through a complex manufacturing process, the sand is refined and transformed into silicon wafers, which are then used to create computer chips. Therefore, sand is a crucial raw material in the production of computers.Rate this question:
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- 2.
Silicon are semi - conductive element.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Silicon is indeed a semi-conductive element. It is widely used in the production of electronic devices and integrated circuits due to its ability to conduct electricity under certain conditions. Silicon's unique properties make it a crucial component in the field of electronics, enabling the development of various technologies such as computers, smartphones, and solar cells. Its semi-conductive nature allows for the control and manipulation of electrical currents, making it an essential material in the modern world of technology.Rate this question:
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- 3.
From silicon we can make ________ switches.
Correct Answer
fastExplanation
Silicon can be used to make fast switches because it is a semiconductor material with excellent electrical properties. It can rapidly switch between conducting and non-conducting states, allowing for fast and efficient electrical signals to be transmitted. This makes it ideal for use in electronic devices and circuits that require high-speed operation.Rate this question:
- 4.
A whole bunch of those switches together make a ______, which is put inside a plastic cover.
Correct Answer
chipExplanation
A whole bunch of those switches together make a chip, which is put inside a plastic cover. A chip refers to a small electronic device that contains multiple switches or transistors integrated onto a single piece of semiconductor material. These switches are responsible for controlling the flow of electric current within a circuit. Once the switches are assembled together on the chip, it is then enclosed in a plastic cover for protection and to prevent any external damage.Rate this question:
- 5.
The heart of anything electronic is those silicon switches.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because silicon switches are a fundamental component of electronic devices. Silicon is a semiconductor material that is commonly used in the manufacturing of transistors, which act as switches in electronic circuits. These switches control the flow of electrical current and allow electronic devices to function properly. Therefore, the heart or essential part of any electronic device relies on silicon switches.Rate this question:
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- 6.
We can switch an electrical current in silicon on or off, at will, and very, very fast.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Silicon is a semiconductor material commonly used in electronic devices. It has the ability to conduct electricity when a current is applied, and can also be switched off when the current is removed. This property allows for the control of electrical current in silicon-based devices, making it possible to switch the current on or off at will. Additionally, silicon has a high electron mobility, enabling fast switching speeds. Therefore, the statement that we can switch an electrical current in silicon on or off, at will, and very, very fast is true.Rate this question:
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- 7.
We use computers for a lot of things. Playing games, writing book reports, calculating math problems...
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Computers are indeed used for a variety of tasks such as playing games, writing book reports, and calculating math problems. Therefore, the statement "We use computers for a lot of things" is true.Rate this question:
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- 8.
Computers move information, for example your book report from the disk to the printer. Or a file from the Internet to your display screen, or to your own hard disk. They store information, and they manage it .
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Computers are capable of moving information from one location to another, such as transferring a book report from the disk to the printer or downloading a file from the Internet onto the display screen or hard disk. They also have the ability to store and manage information. Therefore, the statement "Computers move information, for example your book report from the disk to the printer. Or a file from the Internet to your display screen, or to your own hard disk. They store information, and they manage it" is true.Rate this question:
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- 9.
Number System that human can use.
- A.
Decimal Number System
- B.
Octal Number System
- C.
Hexadecimal Number System
Correct Answer
A. Decimal Number SystemExplanation
The decimal number system is the number system that humans commonly use in everyday life. It is a base-10 system, meaning it uses ten digits (0-9) to represent numbers. Each digit's value is determined by its position in the number. For example, in the number 345, the digit 5 represents 5 ones, the digit 4 represents 4 tens, and the digit 3 represents 3 hundreds. This system is widely used because it is intuitive and easily understood by most people. Octal and hexadecimal number systems are also used in computing and mathematics, but they are not as commonly used as the decimal system.Rate this question:
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- 10.
Binary, Decimal, Octal, Hexadecimal
- A.
Computer Number System
- B.
Number System
- C.
Conversion Number System
Correct Answer
B. Number SystemExplanation
The given answer, "Number System," is correct because the options provided are all different number systems. Binary, decimal, octal, and hexadecimal are all ways of representing numbers. Each number system has its own base and set of digits used to represent numbers. Therefore, "Number System" is the most appropriate and comprehensive category that encompasses all the given options.Rate this question:
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- 11.
Convert 21 hexadecimal into binary.
- A.
100001
- B.
1010001
- C.
100101
Correct Answer
A. 100001Explanation
To convert a hexadecimal number to binary, each digit of the hexadecimal number is converted into its 4-bit binary equivalent. In this case, the hexadecimal number 21 has two digits: 2 and 1. The binary equivalent of 2 is 0010, and the binary equivalent of 1 is 0001. Therefore, when the two binary equivalents are combined, the resulting binary number is 100001.Rate this question:
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- 12.
Convert 41 octal to decimal.
- A.
23
- B.
41
- C.
33
Correct Answer
C. 33Explanation
To convert a number from octal to decimal, each digit is multiplied by the corresponding power of 8 and then added together. In this case, the octal number 41 can be calculated as (4 * 8^1) + (1 * 8^0), which equals 32 + 1, resulting in the decimal number 33.Rate this question:
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- 13.
Convert 117 decimal to hexadecimal.
- A.
25
- B.
75
- C.
65
Correct Answer
B. 75Explanation
To convert a decimal number to hexadecimal, we divide the decimal number by 16 repeatedly and record the remainder each time. Then, we read the remainders in reverse order to get the hexadecimal equivalent. In this case, dividing 117 by 16 gives a quotient of 7 and a remainder of 5. Therefore, the hexadecimal equivalent of 117 is 75.Rate this question:
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- 14.
Convert 1110101 binary to octal.
- A.
125
- B.
79
- C.
165
Correct Answer
C. 165Explanation
To convert a binary number to octal, we group the binary digits into sets of three starting from the rightmost digit. In this case, we have 111 010 1. Next, we convert each group of three binary digits into their equivalent octal digit. 111 in binary is equal to 7 in octal, 010 is equal to 2, and 1 is equal to 1. Therefore, the octal representation of 1110101 binary is 165.Rate this question:
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- 15.
Convert 1C3 hexadecimal to binary
- A.
451
- B.
113
- C.
453
Correct Answer
A. 451Explanation
To convert a hexadecimal number to binary, we can break down each digit of the hexadecimal number into its binary equivalent. In this case, the hexadecimal number is 1C3. The digit 1 in hexadecimal is equivalent to 0001 in binary. The digit C in hexadecimal is equivalent to 1100 in binary. And the digit 3 in hexadecimal is equivalent to 0011 in binary. Combining these binary equivalents, we get 0001 1100 0011, which is equal to 451 in decimal.Rate this question:
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- 16.
Convert 451 decimal to octal.
- A.
443
- B.
703
- C.
112
Correct Answer
B. 703Explanation
To convert a decimal number to octal, we divide the decimal number by 8 repeatedly until the quotient becomes 0. The remainders obtained in each division, when read from bottom to top, give the octal equivalent of the decimal number. In this case, when we divide 451 by 8, we get a quotient of 56 and a remainder of 3. Dividing 56 by 8 gives a quotient of 7 and a remainder of 0. Finally, dividing 7 by 8 gives a quotient of 0 and a remainder of 7. Reading the remainders from bottom to top gives the octal equivalent 703.Rate this question:
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- 17.
Convert 431 decimal to binary.
- A.
110101111
- B.
1101011011
- C.
1101011
Correct Answer
A. 110101111Explanation
The correct answer is 110101111. This is the binary representation of the decimal number 431.Rate this question:
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- 18.
Convert 110101111 binary to octal.
- A.
125
- B.
135
- C.
657
Correct Answer
C. 657Explanation
To convert a binary number to octal, we group the binary digits into sets of three starting from the rightmost digit. In this case, we have 110 101 111. Then, we convert each group of three binary digits to its equivalent octal digit. 110 is equivalent to 6 in octal, 101 is equivalent to 5 in octal, and 111 is equivalent to 7 in octal. Therefore, the binary number 110101111 is equal to the octal number 657.Rate this question:
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- 19.
Subject Code of Digital Electronics
- A.
CS029
- B.
CS028
- C.
CS027
Correct Answer
A. CS029Explanation
The correct answer is CS029. This answer is likely the subject code for Digital Electronics. It is common for academic courses to have specific codes assigned to them, and CS029 could be the code specifically designated for Digital Electronics.Rate this question:
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- 20.
My instructor's fullname is ____________.(include the middle initial)
Correct Answer
Gilbert D. Manucduc
Gilbert D ManucducExplanation
The correct answer for this question is "Gilbert D. Manucduc" or "Gilbert D Manucduc". This is because the question asks for the instructor's full name, including the middle initial. Both of these answers provide the full name with the middle initial included.Rate this question:
- 21.
Create a 250 words essay, base on your first assignment on Digital Electronics and How would you relate it on the real world.
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Apr 03, 2024Quiz Edited by
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Jun 26, 2011Quiz Created by
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