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What do you mean by 2 byte and 3 byte instruction?
Three-byte instruction is the type of instruction in which the first 8 bits indicates the opcode and the next two bytes specify the 16-bit address. The low-order address is represented in second byte and the high-order address is represented in the third byte.
What do you mean by 2 byte?
A byte is a data measurement unit that contains eight bits, or a series of eight zeros and ones. With two bytes, it is possible to represent 216 or 65,536 values. While the byte was originally designed to store character data, it has become the fundamental unit of measurement for data storage.
What is the meaning of byte count?
The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures.
Which is bigger MB or GB?
A megabyte (MB) is 1,024 kilobytes. A gigabyte (GB) is 1,024 megabytes.
What is full form of RAR file?
Full name. RAR Archive File Format Family. Description. RAR, or the Roshal ARchive format thanks to its namesake creator software developer Eugene Roshal, is a proprietary archive file format that supports data compression, error recovery and file spanning.
What is Rotate left with carry?
Description. The left rotate instruction shifts all bits in the register or memory operand specified. The most significant bit is rotated to the carry flag, the carry flag is rotated to the least significant bit position, all other bits are shifted to the left. The result includes the original value of the carry flag.
What does byte 1 and byte 2 mean?
The “byte 1” of the next instruction in this example is “33”, “byte 2” is “C9”, and it doesn’t have a “byte 3”. Variable-length instruction sets, such as the 8085 and the one in this example, typically encode the opcode and the format of the instruction in the first byte.
Which is an example of a byte variable?
Keyword “byte” is used to declare byte variables. For example, the following declares two byte variables called a and b: byte a, b; Byte data type is an 8-bit signed two’s complement integer. Minimum value of Byte is -128 (-2 7 ). Maximum value of Byte is 127 (inclusive) (2 7 -1). Default value of Byte is 0.
Why is the byte the smallest addressable unit of memory?
Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures. The size of the byte has historically been hardware dependent and no definitive standards existed that mandated the size.
How many values can be represented in an 8 bit byte?
With 8 bits in a byte, you can represent 256 values ranging from 0 to 255, as shown here: 0 = 00000000 1 = 00000001 2 = 00000010 In the article How CDs Work, you learn that a CD uses 2 bytes, or 16 bits, per sample. That gives each sample a range from 0 to 65,535, like this: