Computer components IT skills: none IT concepts: computer components (input devices, output devices, memory, storage and CPU), information flow between.

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Presentation transcript:

Computer components IT skills: none IT concepts: computer components (input devices, output devices, memory, storage and CPU), information flow between them, program file and data files, embedded system, general purpose computer, RAM vs. ROM vs flash memory, technology trends This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

Where does this topic fit? Internet concepts – Applications – Technology – Implications Internet skills – Application development – Content creation – User skills

Computer components Memory CPU Storage devices (programs and data) Input devices Output Devices

Input devices

Output devices

Storage devices

CPU and Memory

Computer components – information flow Memory CPU Storage devices (programs and data) Input devices Output Devices

The Internet is a very large, slow storage device A relatively slow link The Internet (programs and data)

Things with computers inside (embedded)

Sensors

General purpose computer Special purpose computer Programs in volatile, random access memory (RAM) Programs in fixed, read only memory (ROM)

Computer components Memory CPU Storage devices (programs and data) Input devices Output Devices

Questions

1.Without looking back, can you name the five functional components of a computer system? 2.Can you reproduce our diagram of a computer system, showing the direction information flows between components? 3.Which is faster, the connection between memory and the CPU or between memory and a keyboard? 4.What limits the rate of information transfer between a keyboard and memory? 5.Can information coming from an input device like a keyboard go straight to storage or a display without passing through memory? 6.What are the differences between ROM and RAM? 7.Name the input devices on an Apple iPad computer. 8.What are the capacities of your computer’s memory and storage? Which is largest? 9.High capacity is desirable for a storage device. What other factors need to be considered in characterizing a storage device? 10.What is the cost trend for memory, storage and CPU chips? 11.We said that digital cameras are embedded computer systems. What are the input, output, and storage devices in a digital camera? 12.We talked of sensors for measuring temperature and acceleration. What other type of sensors are found in today’s computer systems?