Computer Block Diagram - PC Schematic

Computer Summaries
Computer Architecture

Computer Block Diagram
PC Schematic

Here is a brief summary computer block
diagram of a typical Personal Computer.

The von Neumann (CISC) architecture employs a single bus. CISC stands for Complex Instruction Set Computer. A single-bus system is illustrated.
The Harvard (RISC) architecture utilizes two busses - a data bus and a separate address bus. RISC stands for Reduced Instruction Set Computer.

Relationships are shown between the CPU, DRAM, local bus, and the peripherals which connect to the motherboard. The ISA bus, SCSI Bus, PCI bus and USB Bus are shown. Some typical computer parameters are given, along with a Graphics Resolution chart.

540 - 600

Primary Personal Computer Hardware Block Diagram Components
in the PC shown above:
Mother board PC components: CPU, Math Co-processor, SRAM cache, DRAM, Video RAM, BIOS ROM, PCI Bridge
Peripherals: Monitor, Keyboard, Mouse, EISA Hard Drive, Floppy Disk, CD ROM, printer, scanner, USB drive

Later intel PC architectures incorporate a 3-chip chipset,
consisting of -
CPU - Central Processing Unit
Northbridge - Connects CPU with DRAM, S-RAM cache, video RAM and Southbridge
Southbridge - Connects peripherals to the Northbridge chip

Graphics Resolution Table
EGA	640 x 480
VGA	1024 x 768
SVGA	1280 x 1024
Hi-Res	1600 x 1280

top of page

This Vaughns Personal Computer Block Diagram
was last updated on 2012-07-12.