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Types of Addressing modes

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  Implied / Implicit Addressing Mode Stack Addressing Mode Immediate Addressing Mode Direct Addressing Mode Indirect Addressing Mode Register Direct Addressing Mode Register Indirect Addressing Mode Relative Addressing Mode Indexed Addressing Mode Base Register Addressing Mode Auto-Increment Addressing Mode Auto-Decrement Addressing Mode 1. Implied Addressing Mode-   In this addressing mode, The definition of the instruction itself specify the operands implicitly. It is also called as  implicit addressing mode .   Examples-   The instruction “Complement Accumulator” is an implied mode instruction. In a stack organized computer, Zero Address Instructions are implied mode instructions. (since operands are always implied to be present on the top of the stack)   2. Stack Addressing Mode-   In this addressing mode, The operand is contained at the top of the stack.   Example-   ADD This instruction simply pops out two symbols contained at the top o...
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Tokens in C

  Character Set of C The C Character Set Character set is set of valid characters that a language can recognise. A character represents any letter, digit, or any other sign that can be used in a program. C ategory Character Set Lowercase & Uppercase Letters a-z, A to Z Digits 0-9 Special Characters ,.;:`?!&^*-+<>()|\~-$?[]()%#=@ White Spaces Tab, space, newline Tokens In C A token is the smallest element of a program that is meaningful to the compiler. Tokens can be classified as follows: Keywords Identifiers Constants Strings Special Symbols Operators Keyword Keywords are pre-defined or reserved words in a programming language. Each keyword is meant to perform a specific function in a program. Since keywords are referred names for a compiler, they can’t be used as variable names because by doing so, we are trying to assign a new meaning to the keyword which is not allowed. You cannot redefine keywords. C language supports 32 keywords which are given below: auto else ...
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Internet Protocol (IP)

  }   I nternet Protocol (IP) is the principal set (or communications protocol) of digital message formats and rules for exchanging messages between computers across a single network or a series of interconnected networks, using the Internet Protocol Suite . }   Messages are exchanged as datagrams, also known as data packets or just packets. }   The main purpose and task of IP is the delivery of datagrams from the source host (source computer) to the destination host (receiving computer) based on their addresses. }   The most prominent component of the Internet model is the Internet Protocol (IP). IP enables internet working and, in essence, establishes the Internet itself. }   ·  The Internet Protocol (IP) is the method or protocol by which data is sent from one computer to another on the Internet. }   ·   Each computer (known as a host) on the Internet has atleast one IP address...
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