Mainframe
-Supercomputer is a computer with a high level of performance compared to a general-purpose computer.
-Performance of a supercomputer is measured in floating-point operations per second (FLOPS) instead of million instructions per second (MIPS).
-Supercomputer is owned by IOM.
Supercomputer
Terminals
-Terminal is a computer, usually with limited processing power, that enables users to send data or receive information from a server or host computer.
-Most retail stores use a point of sale (POS) terminal to record purchase, process credit or debit cards and update inventory.
Point of sale (POS)
Two types of terminal
1) Automated Teller Machine (ATM) is a self-service banking terminal that enables customers of financial institution to perform financial transactions, such as cash withdrawals, deposits, transfer funds, or obtaining account information, at any time and without the need for direct interaction with bank staff. is a self-service banking terminal that connects to a host computer through a network.
ATM
2) Self-service kiosk is a freestanding terminal that usually has a touch screen for user interaction.
Self-service kiosk in McDonald
What is Cloud Computing?
-Cloud computing refers to an environment of servers that house and provide access to resources users access through the Internet such as Google Drive.
Mobile Devices
5 Types of Mobile Devices
1) Smartphone - is an Internet-capable phone that usually also includes a calendar, an address book,
a calculator, games, browser and numerous other apps. Many smartphones have
touch screens. Some have a built-in mini keyboard on the front of the phone or a
keyboard that slides in and out from behind the phone.
7 types of keyboard
2) Digital Camera - is a mobile device that allows users to take photos and store the photograhed
images digitally.
Digital Camera
3) Portable Media Player - sometimes called a personal media players, is a mobile device on which
you can store, organize and play or view digital media.
Portable Media Player
digital publications.
E-book reader
game console all in one unit. Game controllers include gamepads,
joysticks, wheels, dance pads and a variety of motion sensing
controllers.
Handheld Game Device
Embedded Computers
- Embedded computer is essentially any specialized computer system that is implemented as part of a larger device, intelligent system or installation.
- Embedded computer systems go by many names (Box PC, Gateway, Controller, Industrial PC etc.
Embedded Computer
Ports and Connections
- Port is the point at which a peripheral device attaches to or communicates with a computer or mobile device so that the peripheral device can send data to or receive information from the computer or mobile device.
- Computer ports have many uses, to connect a monitor, webcam, speakers, or other peripheral devices.
Port On Mobile Device and Computer
-A connector joins a cable to a port. A connector at one end of a cable attaches to a port on the computer or mobile device and a connector at the other end of the cable attaches to a port on the peripheral device.
Popular Ports and Connectors
-A USB port, short for universal serial bus port, can connect up to 127 different peripheral devices together with a single connector. Instead of connecting peripheral device directly to ports on a mobile computer, some mobile users prefer the flexibility of port replicators or docking stations.
USB port
- Instead of connecting computers and mobile devices to peripheral devices with a cable, some peripheral devices use wireless communications technologies.
1) Bluetooth
2) Wi-Fi
3) NFC
Protecting Hardware
-Some schools and businesses use cables to lock computers and help prevent theft of equipment. This is a good way to protect the computer from theft.
Use cable to lock computer
-Hardware can fail for a variety of reasons: aging hardware; random events such as electrical power problems; and even errors in programs or apps.