Operating Systems and HCI

• The following are questions related to operating systems, human-computer interaction, computing devices, and data representation.

Operating Systems

• Definition of an operating system is required.
• Functions of an OS include:
  • Resource management
  • Device management
  • Data management
• Examples of operating systems should be enumerated.
• Advantages and disadvantages of low-level languages need to be stated.
• A historical timeline of the evolution of programming languages must be sketched.

Human-Computer Interaction

• Impacts of input modalities on data acquisition and user experience need to be analyzed.
• The ways touchscreens and voice recognition shape human interaction with computers need discussion.
• Potential future trends in input devices are to be explored.
• An explanation of the evolutionary generation of computers must be provided.
• Output peripherals utilized in computing systems should be listed.

Computing Devices

• An overview of types of computing devices is needed.
• Information stored on a disc at manufacture that cannot be altered or deleted is read only.
• Hard disk drives are mass storage.
• Data storage after power loss is non-volatile.
• Data, programs, and processed information are temporarily stored in RAM during processing.
• Determining if a computer's RAM chip stores key system settings for boot-up is required (true or false).
• The reason for the above answer will need to be given.
• Over-clocking increases microprocessor speed relative to other components.
• An explanation of a memory structure to reduce delay in accessing RAM when over-clocking is needed.

Data Representation

• Calculators use BCD to store decimal values for display.
• The number of bits required for an 8-digit decimal calculator needs determining.
• Bits stored when 375 is entered into a calculator requires an explanation.
• Usefulness of octal and hexadecimal number systems must be discussed.
• Bytes needed to represent 846,569 in BCD should be calculated.
• Number of bytes in a 32-bit string is required.
• The largest decimal value representable in binary using two bytes must be stated.
• The repeated-division method of decimal-to-binary conversion should be explained via a flowchart.

The lesson covers operating systems, including their definition, functions (resource, device, and data management), and examples. It further discusses human-computer interaction, including input modalities, touchscreens, voice recognition and future trends. The lesson includes the evolution of programming languages.