Computer Hardware Input Devices In computing an input

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Computer Hardware

Computer Hardware

Input Devices • In computing, an input device is any peripheral (piece of computer

Input Devices • In computing, an input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or other information appliance.

Keyboard • Wired or wireless • Keyboards for phones • Ergonomic Keyboard

Keyboard • Wired or wireless • Keyboards for phones • Ergonomic Keyboard

Mouse • Wired or Wireless

Mouse • Wired or Wireless

Alternative Pointing Devices • Trackballs • Pointing Stick • Touch pads

Alternative Pointing Devices • Trackballs • Pointing Stick • Touch pads

Touch-Sensitive Pads and Touch Screens

Touch-Sensitive Pads and Touch Screens

Pen Input

Pen Input

Game Controllers

Game Controllers

Visual Input

Visual Input

Voice Input http: //www. midomi. com/ Shazam Soundhound

Voice Input http: //www. midomi. com/ Shazam Soundhound

Scanners and Readers

Scanners and Readers

Biometric Data

Biometric Data

Output Devices • An output device is any piece of computer hardware equipment used

Output Devices • An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form.

Display Devices LCD Screens CRT

Display Devices LCD Screens CRT

Display Devices – Cathode Ray Tub

Display Devices – Cathode Ray Tub

Display Devices – Cathode Ray Tub

Display Devices – Cathode Ray Tub

LCD – Liquid Crystal Display • http: //www. youtube. com/watch? v=jiej. NAUw c. Q

LCD – Liquid Crystal Display • http: //www. youtube. com/watch? v=jiej. NAUw c. Q 8 • RESOLUTION: • 1280× 1024 Pixels, 60 Hz, 8 Bit Color Number of bits per second displayed? • Camera has Mega Pixels (Million Pixels)

Speakers, Headphones, Earbuds

Speakers, Headphones, Earbuds

The System Unit • The case that contains all the electronic components • Includes:

The System Unit • The case that contains all the electronic components • Includes: – Motherboard – Processor(s) – Memory – Buses – Adapters/Expansion Slots – Drive Bays and Drives – Power Supply

Motherboard • Holds many of the crucial components of the system, such as the

Motherboard • Holds many of the crucial components of the system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals

Processor(s) or CPU • CPU: stands for Central Processing Unit. Is the hardware within

Processor(s) or CPU • CPU: stands for Central Processing Unit. Is the hardware within a computer system which carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of a system. • Multi-core – two or more CPU’s • Node – Holds a Multi-core CPU

Multi-Core and Parallel Processing

Multi-Core and Parallel Processing

Pipelining

Pipelining

Threading and Hyperthreading • Each CPU can handle a thread • Thread does a

Threading and Hyperthreading • Each CPU can handle a thread • Thread does a pipeline • CPU has to execute pipeline for each thread • Hyper threading

Cooling

Cooling

Video/Graphics Cards

Video/Graphics Cards

Speed and Performance • Measured in Hz (number of cycles per second) • Refresh

Speed and Performance • Measured in Hz (number of cycles per second) • Refresh Rate of TV, 60, 120, 240 Hz (GO BACK TO LCD SLIDE) • Processors now at GHz That’s 1, 000, 000 Hz (Billion)

Speed and Performance

Speed and Performance

Memory • Hard drive • RAM • More on this later

Memory • Hard drive • RAM • More on this later

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