technical guide 1 & 2 hardware and software. how do companies decide what to buy? 2
TRANSCRIPT
Technical Guide 1 & 2
Hardware and Software
How do companies decide what to buy?
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How do you decide what to buy?
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TG1.3 Computer Hierarchy
Supercomputers
Mainframe Computers
Midrange Computers
TG1.3 Computer Hierarchy
Microcomputers
What does hardware mean to you?
Hardware
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Hardware Consists of ….
• Central Processing Unit
• Primary Storage
• Secondary Storage
• Communication Technologies
• Input and Output Technologies
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What technology do you need?
• Tablets vs. Laptops• Tablet Comparisons• Laptop Comparison
• Things to consider• Purpose• Central Processing Unit• Primary Storage • Secondary Storage
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How computers processes information
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CPU &Storage Input &
Output
How computers processes information
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Central Processing Unit
Primary Memory
Secondary Memory
Example
CPU (Central Processing Unit)
Designed to perform the actual computation or “number crunching” inside the computer.
32 vs. 64 bit processing Choosing the right processor
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Memory - Where do we store information?
3.1 Primary Storage – handles small amounts of information to be used immediately by the CPU (internal)
3.2 Secondary Storage – stores larger amounts for extended periods of time (can be both internal or external)
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Memory Capacity
Bit
Byte
In this picture:01001000represents the letter H
Letter “H” = 8 bits = 1 byte
Kilobyte (KB) ~1,000 bytes
Megabyte (MB) ~1,000,000 bytes
Gigabyte (GB) ~1,000,000,000 bytes
Terabyte (TB) ~1,000,000,000,000 bytes
Petabyte (PB) ~ 1,000 TB
Exabyte (EB) ~ 1,000 PB
Zettabyte ~ 1,000 EB
Primary Storage
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RegisterHow much
RAM?
Cache ROM
Why the CPU and RAM is important?
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Secondary Storage
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Optical Storage (CD – 700 MB, DVD – 4.7 GB)
Flash memory devices and thumb drives (GBs)
External Hard Drives (TBs)
Input and Output Technologies
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4.1 Input Technologies• Human Data-Entry• Source-Data Automation
4.2 Output Technologies• Monitors• Printers
Input Technologies – Human Input
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Input technologies then….
The “original” mouse
A punch card for mainframe processing
One of the first apple computers
Input Technologies – Human Input
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Input technologies now….
Input Technologies – Human Input
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Input technologies to come….
Microsoft multi-touch screen
Microsoft Surface Computing offers a new interface for users
Gesture Sensing
Output Technologies
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E-Readers
LG High Definition Monitors
Laser Printers
iPad
How do companies decide what to buy?: Strategic Hardware Issues What do organizations need to consider when
thinking about hardware?
• How do they keep pace with advancements?• How often should they upgrade?
• Will upgrading increase productivity? • How do we assess this increase in productivity?
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Additional Organization considerations:
How are organizations structured?• What are the needs of the organization?• Do employees telecommute? What type of devices
are needed?• Will they work within the current environment of
hardware being used within the organization?
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How do companies decide what to buy?: Strategic Hardware Issues
TG2.1 Introduction to Software
Software
Computer program
Stored program concept
Documentation
© Karsten Ehlers/Age Fotostock America, Inc.
Software Issues
Software Defects
Software Licensing
Open Systems
Open Source Software © Karsten Ehlers/Age Fotostock America, Inc.
Types of Software
System software
Application software
TG2.3 Systems Software
Operating Systems
Functions of the Operating System
Graphical User Interface
Social Interface
Enhanced interfaces•Google Glass•Meta SpaceGlasses
Class Exercise
You are responsible for setting up a new lab in the CIS Building. There will be a need for 30 devices accessing the network including at least 5 of these needing to be mobile. This lab will be used to teach MIS 213 and a programming class (VB.Net).
What hardware/software would you suggest to accomplish the needs above?
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Class Exercise
Steps:
1.Determine how you will use the computers?
2.Choose computer software
3.Choose computer hardware
4.Protect you computer system
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