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Questions and Answers
What is the purpose of the PTR operator in assembly language?
What is the purpose of the PTR operator in assembly language?
- To define comments within the code
- To perform arithmetic operations
- To specify the size of the data being accessed (correct)
- To indicate the start of a new instruction
Which characters are allowed in assembly language identifiers?
Which characters are allowed in assembly language identifiers?
- Alphabetic letters, digits, special characters: #, !
- Alphabetic letters, digits, special characters: *, +, =
- Alphabetic letters, digits, special characters: &, %, ^
- Alphabetic letters, digits, special characters: $, @ (avoided) (correct)
What does the statement 'DB 14 23' indicate in assembly language syntax?
What does the statement 'DB 14 23' indicate in assembly language syntax?
- It performs a conditional jump based on values 14 and 23
- It specifies a delay loop with counts 14 and 23
- It initializes a register with values 14 and 23
- It defines byte data with values 14 and 23 (correct)
What type of information do predefined symbols like @data and @model provide in assembly language?
What type of information do predefined symbols like @data and @model provide in assembly language?
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What is the role of the assembler in translating assembly language statements?
What is the role of the assembler in translating assembly language statements?
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Study Notes
Assembly Language Concepts
- The PTR operator in assembly language is used to specify the size of the memory location being referenced.
Identifiers in Assembly Language
- In assembly language, identifiers can contain letters (a-z or A-Z), digits (0-9), and special characters (? and _).
Data Definition in Assembly Language
- The statement 'DB 14 23' in assembly language syntax indicates defining a byte (DB) with initial values 14 and 23.
Predefined Symbols in Assembly Language
- Predefined symbols like @data and @model in assembly language provide information about the location counter, segment, and memory model.
Role of Assembler
- The assembler plays a crucial role in translating assembly language statements into machine code, which can be executed directly by the computer.
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Description
Test your knowledge on using the PTR (pointer) operator in assembly language with this quiz. Understand how to manipulate data using PTR and learn the syntax of assembly language.
