Operating System (OS): OS is the term that acts as an interface between the hardware and the user. OS does basic operations such as getting input from the keyboard, displaying output in the monitor and monitoring the files. OS controls the peripheral devices like printers, hard drives and mouse. It is responsible for the management and co-ordination of activities on a computer system. It is the most important program that runs on a computer is operating system. The responsibilities of OS are bound to get higher when it comes to security, because it provides the access rights for users. Chrome OS: It is Linux kernel based OS which is developed by Google. It is taken from Chromium OS which is free software. All the tasks are performed by giving command to the OS. It provides security to the user. It includes efficient integration with different applications of Google.

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7. Long-Distance CallsA long-distance provider charges the following rates for telephone calls: Rate Category Rate per MinuteDaytime (6:00 a.m. through 5:59 p.m.) $0.07Evening (6:00 p.m. through 11:59 p.m.) $0.12Off-Peak (midnight through 5:59 a.m.) $0.05Write a GUI application that allows the user to select a rate category (from a set of radio buttons), and enter the number of minutes of the call into an Entry widget. An info dialog box should display the charge for the call.

Answer 1

Question

Chapter 9, Problem 28CT

Program Plan Intro

Operating System (OS):

OS is the term that acts as an interface between the hardware and the user.

OS does basic operations such as getting input from the keyboard, displaying output in the monitor and monitoring the files.

OS controls the peripheral devices like printers, hard drives and mouse.

It is responsible for the management and co-ordination of activities on a computer system.

It is the most important program that runs on a computer is operating system.

The responsibilities of OS are bound to get higher when it comes to security, because it provides the access rights for users.

Chrome OS:

It is Linux kernel based OS which is developed by Google.

It is taken from Chromium OS which is free software.

All the tasks are performed by giving command to the OS.

It provides security to the user.

It includes efficient integration with different applications of Google.

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7. Long-Distance CallsA long-distance provider charges the following rates for telephone calls: Rate Category Rate per MinuteDaytime (6:00 a.m. through 5:59 p.m.) $0.07Evening (6:00 p.m. through 11:59 p.m.) $0.12Off-Peak (midnight through 5:59 a.m.) $0.05Write a GUI application that allows the user to select a rate category (from a set of radio buttons), and enter the number of minutes of the call into an Entry widget. An info dialog box should display the charge for the call.

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