2. Central Processing Unit (CPU)
• The CPU is the brain of a
computer, containing all the
circuitry needed to process
input, store data, and output
results.
3. Continue…
• The CPU is constantly following instructions of
computer programs that tell it which data to process
and how to process it. Without a CPU, we could not
run programs on a computer.
4. For example
• a simple calculator
program might instruct
the CPU to take two
numbers, 2 and 2, add
them, and send back the
result.
5. Graphics Processing Unit (GPU)
• A graphics processing
unit (GPU) is a computer
chip that renders
graphics and images by
performing rapid
mathematical
calculations.
6. Continue…
• GPUs are used for both professional and personal
computing. Traditionally, GPUs are responsible for the
rendering of 2D and 3D images, animations and video --
even though, now, they have a wider use range.
7. GPU vs. CPU
• GPUs are fairly similar to CPU architectures. However,
CPUs are used to respond to and process the basic
instructions that drive a computer, while GPUs are
designed specifically to quickly render high-resolution
images and video. Essentially, CPUs are responsible for
interpreting most of a computer's commands, while GPUs
focus on graphics rendering.
8. RAM (Random Access Memory)
• Alternatively called main
memory, primary memory,
or system
memory, RAM (random-
access memory) is a hardware
device that allows information
to be stored and retrieved on a
computer.
9. Continue…
• RAM is usually associated with DRAM, a type of memory
module. Because data is accessed randomly instead of
sequentially like it is on a CD or hard drive, access
times are much faster. However, unlike ROM, RAM is
a volatile memory and requires power to keep the data
accessible. If the computer is turned off, all data
contained in RAM is lost.
