Which indigenous tribe of Brazil can count only up to 2 and describes more than two as 'many'?
- aMaya
- bPiraha
- cSumerian
- dInca
152 questions · 25 sections
Which indigenous tribe of Brazil can count only up to 2 and describes more than two as 'many'?
The Sumerian-Babylonian number system was based on which base?
Which ancient civilization used a base-10 (decimal) number system that we still use today?
The base-20 number system was used by which civilization?
Which people were the first to use zero as a number in their number system?
The Indian number system used how many separate symbols (digits) in total?
Traces of the base-60 number system are still found in which of the following?
The Roman number system expressed numbers using which method?
The symbols 1, 2, 3 … that we use today are known as which numerals?
Number systems are broadly classified into which two types?
In which number system does a symbol keep the same value regardless of its position?
Roman numerals are an example of which type of number system?
In the decimal number 555, what is the value represented by the leftmost 5?
Consider the following statements about positional number systems:
Why do digital devices use the binary number system rather than the decimal system?
What is the only limitation of the binary number system mentioned in the text?
The number of digits needed in a number system is referred to as its —
MSB and LSB respectively stand for —
What is the base of the octal number system?
Which set of digits is used in the hexadecimal number system?
How many binary bits are needed to express one hexadecimal digit?
In the binary number system, the local value of each position increases in multiples of —
What is the decimal value of the binary number ?
What is the decimal value of the binary number ?
The decimal number 25 is equal to which binary number?
When converting a decimal number to binary by repeated division by 2, the remainders give the bits in which order?
To convert a decimal number to any base, by which value should we repeatedly divide?
The decimal number 710 converts to which octal number?
The octal number converts to which binary number?
When converting binary to octal, the binary number is divided into groups of how many bits starting from the LSB?
The binary number converts to which octal number?
What is the decimal value of the hexadecimal number ?
What is the decimal value of ?
The decimal number 7106 converts to which hexadecimal number?
When converting binary to hexadecimal, the bits are grouped into sets of how many?
The binary number converts to which hexadecimal number?
What is the easiest way to convert an octal number to a hexadecimal number (or vice versa)?
The hexadecimal number equals which octal number?
According to the text, an electronic circuit performing binary operations must know which of the following that a human doing it manually need not?
In reality, how many basic circuits are needed to perform all arithmetic operations?
According to the text, multiplication in a digital circuit is performed by —
In a signed binary number, which bit is reserved to represent the sign?
If the sign bit of a signed number is 1, the number is —
How is the decimal +1 written as an 8-bit signed number?
How is the decimal -1 written as an 8-bit signed number?
What serious problem arises with the simple sign-bit method of representing signed numbers?
How is a negative number defined in the text?
How is the 1's complement of a binary number obtained?
How is the 2's complement of a binary number obtained?
What is the 2's complement of the 8-bit number 10110011?
In the 2's complement system, how do we determine whether a binary number is positive or negative?
The 2's complement of a 2's complement of a number gives —
When subtracting using the 2's complement method, the extra bit produced beyond the fixed bit length is called —
Using the 2's complement method to subtract 25 from 50, the 8-bit result has MSB 0. This indicates the result is —
The conversion of characters, letters, words and symbols into a binary system is known as —
BCD stands for —
In the BCD method, each decimal digit is expressed using how many binary bits?
Which binary combinations are never used in the BCD code?
The decimal number 10 in BCD is written as —
The BCD code 1001 0010 0110 represents which decimal number?
ASCII stands for —
ASCII is a code of how many bits?
How many different symbols can the 7-bit ASCII code express?
In ASCII, the first 32 codes are used as —
Which device was ASCII first invented to be used in?
From the ASCII table, what is the ASCII code for the capital letter 'A'?
From the ASCII table, what is the ASCII code for the small letter 'a'?
From the ASCII table, the code 48 represents which symbol?
Which organization launched the first version of Unicode?
In which year was the first Unicode version 1.0.0 launched?
The 13th edition of Unicode, launched in 2020, supports how many languages?
Which of the following are common Unicode encoding formats?
In UTF-8, a character is represented using how many bytes?
Using the default 16-bit Unicode encoding, how many codes can be generated?
Which Unicode format has become an unwritten standard for use on websites?
In Unicode, the code represents the English letter 'A' and represents which Bengali letter?
Boolean Algebra works with which values only?
Boolean Algebra has which three mathematical operations?
In Boolean Algebra, what is the result of ?
In Boolean Algebra, what is the result of (Boolean multiplication)?
What is the correct order of operations in Boolean Algebra?
In a digital device, the Boolean 0 and 1 actually represent —
The theorem is known as —
The theorem and is known as —
The theorem and is known as —
Which of the following correctly states De Morgan's theorems?
The Absorption theorem states that ?
The expression simplifies to —
The expression simplifies to —
A table that expresses the relationship between every possible input and output is called a —
If a Boolean expression has variables, how many input combinations (rows) will its truth table have?
A truth table for an expression with 2 variables will have how many input rows?
Which logic gate performs the complement operation?
The multiplication operation of Boolean algebra is performed by which gate?
The OR gate performs which Boolean operation?
For an AND gate to produce a 1 output, the inputs must be —
Why are AND, OR and NOT called basic gates?
In the light-control circuit with two switches, what is the Boolean expression for the output Q?
A NAND gate is equivalent to which combination?
Which two gates are called universal gates?
Why are NAND and NOR called universal gates?
Which theorem justifies that any Boolean operation can be done using only complement and addition (or complement and multiplication)?
A NOR gate is equivalent to which combination?
Which gate produces a 1 output only when its two inputs are different?
The Boolean expression of an XOR gate is —
Why can the AND gate not be used for binary addition of 1 and 1?
The XNOR gate produces a 1 output when —
An XNOR gate can be made by —
In a half adder, the sum (result) bit is produced by which gate?
In a half adder, the carry bit is produced by which gate?
Why is a half adder circuit called "half"?
A full adder adds how many bits at a time?
In a full adder truth table, the two outputs are —
Consider the following statements about adders:
When adding four bits using full adder block diagrams, why is CIN1 = 0 in the first block?
A flip-flop is a memory element that can store how many binary bits?
A flip-flop is also known by which other names?
What is used to trigger a flip-flop from one state to another?
A flip-flop generally has two outputs. What is the relationship between them?
Which of the following are uses of flip-flops?
A register is a set of —
An n-bit register consists of how many flip-flops?
Placing new data into a register is called —
Who can store data into the registers of a CPU?
Registers are widely used as which type of memory?
A counter is a sequential circuit that can —
A counter having flip-flops has a modulus (mode number) of —
An n-bit binary counter can follow a counting sequence from —
The maximum number a counter can count is called its —
In a 3-bit binary counter, the least significant bit (LSB) toggles —
Which of the following are common uses of counters?
A digital device is any electronic device capable of —
Large assemblies of logic gates packaged together for ease of use are known as —
Which of the following is an example of a digital storage device?
Which of the following are components found in complex digital devices?
What is the number of bits in Unicode (default)?
How many different characters can be coded in Unicode (default 16-bit)?
What is the next value of the sequence 4, 8, C?
What is the 2's complement of the decimal number -12 (in 8 bits)?
What is the equivalent hexadecimal number of ?
If a gate has every input line as 0 and the output is 1, the gate is a —
What is 2's complement?
Why are "binary " and "Boolean " not the same?
What is code (in the context of digital devices)?
In the price problem, taka. What is the price of Z in the decimal system?
In the price problem, and . Comparing their decimal values —
What is an adder?
The expression is best explained by which combination of Boolean theorems?