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input & Output,Comp, Bus, Mem, Bits, Program, binary code

input & Output,Comp, Bus, Mem, Bits, Program, binary...

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Unformatted text preview: CSI 201 Introduction to Computer Science Central Processing Unit Random Access Memory Bus Keyboard Mouse DVD CD-R Drive Ethernet Video Input and Output Input and Output • In addition to – the CPU to process instructions and data, and – the memory to store them, a computer needs ways to get information in and out of it. • The computer wouldn’t be terribly useful otherwise. Input and Output Input and Output • In order to get the – Programs (sequences of instructions), and – Data it needs to operate, there must be ways to input these to the computer. Input and Output Input and Output • Typical ways to input information to a computer would include: Read it from a CD or DVD, Type it in from a keyboard, or Download it from the Internet. Input and Output Input and Output • Similarly, we need ways to get access to the information that is in the computer. • Getting information from a computer is known as output . Input and Output Input and Output • Typical methods of output are: Displaying it to a monitor Displaying it to a monitor • Printing it out. Burning data to a CD or DVD, • Sending it to another computer via the Internet. Input and Output I/O Devices • Input and Output ( I/O ) are done by devices connected to the computer. • These can be viewed as components that do one or both of – Input - transfer data into the computer, – Output - copy data out of the computer. Input and Output I/O Devices Central Processing Unit Random Access Memory Bus Keyboard Mouse DVD CD-R Drive Ethernet Video Putting It All Together The Bus Central Processing Unit Random Access Memory Bus Keyboard Mouse DVD CD-R Drive Ethernet Video Putting It All Together The Bus • We have the processor, the memory, and I/O devices. • We haven’t discussed how they all communicate....
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input & Output,Comp, Bus, Mem, Bits, Program, binary...

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