Podcast
Questions and Answers
What is the main focus of computer organization?
What is the main focus of computer organization?
- Explaining the functions computer systems should perform
- Describing how the hardware components are arranged (correct)
- Establishing high-level design principles
- Defining operational attributes of a computer system
Which of the following is a type of CPU organization?
Which of the following is a type of CPU organization?
- Stack Organization (correct)
- Parallel Processing
- Distributed Architecture
- Cloud Computing
Which statement accurately differentiates computer architecture from computer organization?
Which statement accurately differentiates computer architecture from computer organization?
- Computer architecture explains what a computer should do. (correct)
- Computer architecture deals with physical components.
- Computer architecture provides structural relationships.
- Computer architecture focuses on the design of I/O systems.
What aspect of the computer system does computer organization NOT cover?
What aspect of the computer system does computer organization NOT cover?
Which characteristic is NOT associated with computer organization?
Which characteristic is NOT associated with computer organization?
How is computer organization organized in terms of design?
How is computer organization organized in terms of design?
What is a crucial role of computer organization in a computer system?
What is a crucial role of computer organization in a computer system?
What type of relationship does computer organization provide between parts of a computer system?
What type of relationship does computer organization provide between parts of a computer system?
What is the primary distinction between computer architecture and computer organization?
What is the primary distinction between computer architecture and computer organization?
What is the primary role of an operating system in a computer system?
What is the primary role of an operating system in a computer system?
Which of the following best describes the term 'data' in computing?
Which of the following best describes the term 'data' in computing?
Which of the following best describes a 'word' in computer architecture?
Which of the following best describes a 'word' in computer architecture?
What is the role of an assembler in computer programming?
What is the role of an assembler in computer programming?
What does the term 'processing' refer to in a computing context?
What does the term 'processing' refer to in a computing context?
What distinguishes primary memory from secondary memory?
What distinguishes primary memory from secondary memory?
What is the purpose of the word length in a computer architecture?
What is the purpose of the word length in a computer architecture?
Which of the following components is NOT part of the functional units of a computer?
Which of the following components is NOT part of the functional units of a computer?
Which of the following statements about memory is correct?
Which of the following statements about memory is correct?
Which device is commonly used to input data into a computer system from high-level language?
Which device is commonly used to input data into a computer system from high-level language?
What is the primary function of a compiler in programming?
What is the primary function of a compiler in programming?
What is referred to as memory access time?
What is referred to as memory access time?
Which type of memory allows contents to be read but not altered by the user?
Which type of memory allows contents to be read but not altered by the user?
Which of the following best defines the term 'output' in a computing context?
Which of the following best defines the term 'output' in a computing context?
What is the main function of the control unit in a computer system?
What is the main function of the control unit in a computer system?
What type of software includes assemblers and compilers?
What type of software includes assemblers and compilers?
Why are caches used in computer architectures?
Why are caches used in computer architectures?
What is the purpose of storing data in the storage area of a computer?
What is the purpose of storing data in the storage area of a computer?
In relation to word storage, what does a unique address identify?
In relation to word storage, what does a unique address identify?
Which of the following best describes the role of input devices in a computer system?
Which of the following best describes the role of input devices in a computer system?
What is the relationship between word size and the data bus width?
What is the relationship between word size and the data bus width?
What is a characteristic of primary memory?
What is a characteristic of primary memory?
Which of the following statements is true regarding cache memory?
Which of the following statements is true regarding cache memory?
What is the primary function of secondary memory?
What is the primary function of secondary memory?
What role do registers play in the operation of the Arithmetic Logic Unit (ALU)?
What role do registers play in the operation of the Arithmetic Logic Unit (ALU)?
Which component acts as the nerve center in a computer by sending signals to other units?
Which component acts as the nerve center in a computer by sending signals to other units?
What is a primary function of the output unit in a computer system?
What is a primary function of the output unit in a computer system?
What does the instruction 'Add LOCA, R0' accomplish in the ALU?
What does the instruction 'Add LOCA, R0' accomplish in the ALU?
Which of the following best describes the operation sequence performed by the processor?
Which of the following best describes the operation sequence performed by the processor?
How does the control unit impact the operation of different devices in a computer system?
How does the control unit impact the operation of different devices in a computer system?
Which type of memory is typically used for storing information that is accessed infrequently?
Which type of memory is typically used for storing information that is accessed infrequently?
What is the purpose of the opcode in an instruction code?
What is the purpose of the opcode in an instruction code?
How does a memory-reference instruction determine its addressing mode?
How does a memory-reference instruction determine its addressing mode?
What type of instruction does not require an operand from memory?
What type of instruction does not require an operand from memory?
Which of the following accurately describes how operands are encoded in instruction codes?
Which of the following accurately describes how operands are encoded in instruction codes?
What determines the number of different instructions a computer architecture can support?
What determines the number of different instructions a computer architecture can support?
In a register reference instruction, what does a '0' in the leftmost bit indicate?
In a register reference instruction, what does a '0' in the leftmost bit indicate?
What is primarily the responsibility of the control unit in relation to instruction codes?
What is primarily the responsibility of the control unit in relation to instruction codes?
What format does a basic computer's instruction encoding NOT include?
What format does a basic computer's instruction encoding NOT include?
Flashcards
Computer Architecture
Computer Architecture
Computer architecture defines the WHAT of a computer system: the functional behavior, how it should operate, and the instructions it can execute.
Computer Organization
Computer Organization
Computer organization defines the HOW of a computer system: the physical structure, interconnection of components, and implementation details.
Single Accumulator Organization
Single Accumulator Organization
Single Accumulator Organization is a CPU structure where a single register, called the accumulator, stores data for all operations.
General Register Organization
General Register Organization
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Stack Organization
Stack Organization
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Computer Organization and Physical Connection
Computer Organization and Physical Connection
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Relationship between Architecture and Organization
Relationship between Architecture and Organization
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Importance of Computer Organization
Importance of Computer Organization
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What is data?
What is data?
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What is information?
What is information?
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What is memory?
What is memory?
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What is storage?
What is storage?
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What is an Assembly Language Program?
What is an Assembly Language Program?
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What is an Assembler?
What is an Assembler?
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What is a High Level Language?
What is a High Level Language?
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What is an Interpreter?
What is an Interpreter?
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System software
System software
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Operating system
Operating system
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Word (in computer architecture)
Word (in computer architecture)
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Hardware
Hardware
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Software
Software
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Translating source code
Translating source code
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Input device
Input device
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Output device
Output device
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Primary memory (RAM)
Primary memory (RAM)
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Secondary memory
Secondary memory
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Word Length
Word Length
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Random Access Memory (RAM)
Random Access Memory (RAM)
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Read Only Memory (ROM)
Read Only Memory (ROM)
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Caches
Caches
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Memory Access Time
Memory Access Time
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Primary Memory
Primary Memory
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Writable Memory
Writable Memory
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Word Size
Word Size
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What is Secondary memory?
What is Secondary memory?
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What does the ALU do?
What does the ALU do?
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What is the Output Unit?
What is the Output Unit?
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What does the Control Unit do?
What does the Control Unit do?
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What is a program in a computer?
What is a program in a computer?
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What is a computer instruction?
What is a computer instruction?
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What is data for a computer?
What is data for a computer?
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What is a register?
What is a register?
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What are micro operations?
What are micro operations?
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What is an instruction code?
What is an instruction code?
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What is an opcode?
What is an opcode?
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What are operands?
What are operands?
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Memory Reference Instruction
Memory Reference Instruction
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Register Reference Instruction
Register Reference Instruction
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Input/Output Instruction
Input/Output Instruction
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Study Notes
Computer Organization and Architecture - Introduction
- Computer architecture is a functional description of the design, implementation, and requirements of computer components.
- Computer organization provides information about the linking of various operational attributes of a computer system.
- Computer architecture outlines what a computer should do, while computer organization explains how a computer works.
- The computer architecture design is determined before the computer organization.
Computer Architecture
- A blueprint for the design and implementation of a computer system.
- Deals with the overall design, including hardware and software components and their interaction.
- It describes the functional details and behavior of a computer system.
- Includes the design of the instruction set, microarchitecture, memory hierarchy, and hardware/software components.
Computer Organization
- Refers to the way hardware components of a computer system are arranged and interconnected.
- Implements the computer architecture.
- Focuses on the "how" of the computer system, specifically how components connect and work together.
- Details the system in an abstract manner.
- Addresses the concepts programmers directly interact with.
Basic Architecture of a Computer
- A computer system includes input devices(keyboard, mouse, scanner, joystick), central processing unit(CPU)(control unit and arithmetic logic unit(ALU)), memory, and output devices(monitor, printer, speaker, headphones).
- The CPU processes data and instructions coming from input devices.
- The memory stores both data and instructions.
- Output devices display the processed information.
Basic Terminology
- Input: Data that is put into the computer system.
- Data: Symbols representing facts, objects, or ideas.
- Information: The results of computer processing of data (bits, bytes, words, numbers, sounds, and graphics).
- Output: Results produced by the computer.
- Processing: Manipulation of data in various ways.
- Memory: Area for temporarily holding data waiting to be processed or stored.
- Storage: Area for data on a permanent basis.
- Assembly language program (ALP): Programs using mnemonics.
- Mnemonic: Instruction in English-like form.
- Assembler: Software to convert ALP to machine language.
- High-Level Language (HLL): Programs using English-like statements.
- Compiler: Software to convert HLL to machine language at once.
- Interpreter: Software to convert HLL to machine language statement by statement.
- System software: Program routines aiding in program execution (e.g., assemblers, compilers).
- Operating system: Collection of routines controlling and coordinating computer activities.
- Word: Unit of data with a defined bit length (e.g., 8 bits = 1 byte).
Functional Units
- A computer has five functional units: input, memory, arithmetic logic unit (ALU), output, and control unit.
Types of Memory
- Primary Memory: Stores programs and data for the processor (e.g., RAM, DRAM, SRAM, ROM, PROM, and various others).
- Secondary Memory: Stores large amounts of data infrequently accessed(e.g., Magnetic disks, tapes, optical disks).
Word Length
- The number of bits in each word called word-length.
Memory Reference Instruction
- A memory-reference instruction uses 12 bits to specify an address and one bit to determine the addressing mode.
Register Reference Instruction
- Identified by the operation code 111 with 0 in the leftmost bit.
- Determines operation or test on the AC register.
Input-Output Instructions
- Identified by the operation code 111 with 1 in the leftmost bit.
- Determines the type of input-output operation.
Identifying Instruction Type
- The type of instruction is determined by the four bits in positions 12 through 15 of the instruction.
Von Neumann Architecture
- Programming is easier when a program is represented a way suitable for storing in memory and can be set or altered by setting values.
- The computer gets instructions from memory..
- This concept is known as the stored-program concept.
CPU(Central Processing Unit):General Structure
- Input - Output devices (I/O)
- Program control unit for interpretation
- Arithmetic logic unit (ALU)
- Main memory which stores programs and data
Bus Structures
- A Communication system to transfer data between components of a computer or between computers.
- A shared transmission medium. Multiple devices can use the same structure.
Bus Structure Functional Groups
- Data Lines: Data transfer between components.
- Address Lines: Identify source or destination.
- Control Lines: Used for control of access to data and address lines by placing commands/timing signals for when to execute. These include Memory Write, Memory Read, I/O Write, I/O Read, Transfer ACK, Bus Request, Bus Grant, Interrupt Request, Interrupt Acknowledge, Clock.
Registers
- Special high-speed storage areas in the CPU.
- Data needs to be in registers to be processed.
Instruction Format
- Programs are stored in RAM as binary (1s and 0s).
- A word of RAM holds one machine language instruction.
- Instructions are loaded in the CPU, received, decoded, and implemented sequentially.
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