FIT1047 Chapter Notes - Chapter -: Von Neumann Architecture, Address Bus
31 May 2018
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Von Neumann Architecture
Saturday, 10 March 2018
5:42 PM
The Von Neumann Architecture
The main architecture in use today is called the Von Neumann architecture. It consists of a Central
Processing Unit (CPU), the memory, and the input/output devices. Furthermore, the CPU can be
subdivided into the Arithmetic/Logic Unit (ALU), a number of registers, and the Control Unit (CU)
The CPU is the "brain" of the computer, it executes programs, which are made up on instructions
that manipulate data. Both the program instructions and the data are stored together in the same
memory. This is one of the distinguishing features of the Von Neumann architecture.
Other architectures have separate memory for instruction and data.
The registers inside the CPU are used to store temporary results and move instructions and data
around (from the memory or I/O device into the CPU, and then into the ALU, and back to the
memory or I/O)
The ALU performs the actual calculations (ex. Addition, multiplication, logical operations)
The connections between memory, I/O devices and CPU are called buses. Most modern computers
have a number of different buses for different functions (ex. Separating the data bus that carries
data and instructions between memory and CPU, from the address bus that tells the memory which
data item to load or store)
Central Processing Units (CPUs)
A central processing unit, or CPU is the component of a computer that does most of the actual
"computing." The Von Neumann architecture, where the instructions that make up the programs we
want to run, as well as the data for those programs are stored in memory.
The CPU is connected to the memory by a set of wires called the bus.
The bus also connects the CPU to external devices (screen, network interface, printer, input devices,
touch screens, keyboards)
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Document Summary
The main architecture in use today is called the von neumann architecture. Processing unit (cpu), the memory, and the input/output devices. Furthermore, the cpu can be subdivided into the arithmetic/logic unit (alu), a number of registers, and the control unit (cu) The cpu is the brain of the computer, it executes programs, which are made up on instructions that manipulate data. Both the program instructions and the data are stored together in the same memory. This is one of the distinguishing features of the von neumann architecture. Other architectures have separate memory for instruction and data. The registers inside the cpu are used to store temporary results and move instructions and data around (from the memory or i/o device into the cpu, and then into the alu, and back to the memory or i/o) The connections between memory, i/o devices and cpu are called buses. Most modern computers have a number of different buses for different functions (ex.
