binary, Boolean logic, Hexadecimal Flashcards
What is the binary number system?
The binary number system is base 2, using only bits 0 and 1.
What is a bit?
A bit is a binary digit, which can be either 1 or 0.
How many bits are in a byte?
There are 8 bits in a byte.
What are the binary headings?
The binary headings are 128, 64, 32, 16, 8, 4, 2, 1.
What is the denary system?
The denary system is a number system using base 10.
How do you convert binary to denary?
Each time a 1 appears in a column, the column value is added to the total.
What are the steps for denary to binary conversion?
- Starting left to right on the binary table. 2. Does 128 go into our number? 3. If no, write a 0 and move onto 64. 4. If yes, write 1 and subtract 128 from the number, then move onto 64 with the new number.
What is a byte?
A byte is a collection of 8 bits.
What is a nibble?
A nibble is a collection of 4 bits (half a byte).
How many bytes are in 1KB?
1KB (kilobyte) is 1,000 bytes.
How many kilobytes are in 1MB?
1MB (megabyte) is 1,000 kilobytes.
How many megabytes are in 1GB?
1GB (gigabyte) is 1,000 megabytes.
How many gigabytes are in 1TB?
1TB (terabyte) is 1,000 gigabytes.
How do you convert bits to bytes?
To convert bits to bytes, divide the number of bits by 8.
How do you convert KB to MB?
To convert KB to MB, divide the number of KB by 1000.
How do you convert MB to KB?
To convert MB to KB, multiply the number of MB by 1000.
What does the AND operator do?
The AND operator returns TRUE if everything compared is true.
What does the OR operator do?
The OR operator returns TRUE if any one of the comparators is true.
What does the NOT operator do?
The NOT operator gives the opposite value to true (false) and reverses the condition.
What are comparison operators?
Comparison operators are symbols used in search criteria, such as >, <, ==, >=, <=, and !=.
What is the hexadecimal number system?
The hexadecimal number system is a number system with base 16.
How do you convert hex to denary?
To convert hex to denary, multiply the left-hand digit by 16, then add the units.
How do you convert denary to hex?
To convert denary to hex, divide the denary number by 16. The number of ‘whole’ 16s that go into the number is the left-hand digit, and the remainder is the right-hand digit.
How do you convert hex to binary?
To convert hex to binary, split the two hex characters. For example, 4 = 0100 and C = 1100, so 4C = 0100 1100 in binary.
