Why lower order address lines are multiplexed?
The main reason of multiplexing address and data bus is to reduce the number of pins for address and data and dedicate those pins for other several functions of microprocessor. These multiplexed set of lines used to carry the lower order 8 bit address as well as data bus.
What does low order bits mean?
The LSB is sometimes referred to as the low-order bit or right-most bit, due to the convention in positional notation of writing less significant digits further to the right. The least significant bits (plural) are the bits of the number closest to, and including, the LSB.
What is high word low word?
The word containing bit 0 of the doubleword is called the low word; the word containing bit 31 is called the high word. Each byte within a doubleword has its own address, and the smallest of the addresses is the address of the doubleword.
What is low order word?
The low-order word adds its exact value to the total value of the int. The high-order word adds its value multiplied by 0x10000 (left-shifted by 16 bits).
What is a low byte and a high byte?
The byte containing bit 0 of the word is called the low byte; the byte containing bit 15 is called the high byte. The byte at this lower address contains the eight least significant bits of the word, while the byte at the higher address contains the eight most significant bits.
What is LSB and MSB in binary?
In a binary number, the bit furthest to the left is called the most significant bit (msb) and the bit furthest to the right is called the least significant bit (lsb).
How do you know if a binary number is negative?
The representation of a signed binary number is commonly referred to as the sign-magnitude notation and if the sign bit is “0”, the number is positive. If the sign bit is “1”, then the number is negative.
How many numbers can a 3 bit word hold?
0 and 1 Two bits can strore four values 00, 01, 10, and 11 three bits can store eight values 000,001,010,011, 100,101,110 and 111.
What is BCD in binary?
Binary coded decimal (BCD) is a system of writing numerals that assigns a four-digit binary code to each digit 0 through 9 in a decimal (base-10) numeral. The four-bit BCD code for any particular single base-10 digit is its representation in binary notation, as follows: 0 = 0000. 1 = 0001.
How do I create a BCD adder?
First, add both the numbers using a 4-bit binary adder and pass the input carry to 0. The binary adder produced the result 0001 and carried output ‘K’ 1. Then, find the Cout value to identify that the produced BCD is invalid or valid using the expression Cout=K+Z8. Z4+Z8.
What are BCD numbers?
In computing and electronic systems, binary-coded decimal (BCD) is a class of binary encodings of decimal numbers where each digit is represented by a fixed number of bits, usually four or eight. Sometimes, special bit patterns are used for a sign or other indications (e.g. error or overflow).
How do you write BCD code?
BCD code plays an important role in digital circuits. The BCD stands for Binary Coded Decimal Number. In BCD code, each digit of the decimal number is represented as its equivalent binary number….Example 1: (11110) 2.
| Binary Code | Decimal Number | BCD Code |
|---|---|---|
| 1 1 0 1 | 13 | 1 : 0 0 1 1 |
| 1 1 1 0 | 14 | 1 : 0 1 0 0 |
| 1 1 1 1 | 15 | 1 : 0 1 0 1 |