Essay 6

Operating System

 An OS is a common computer piece in the world today. An OS is an intricate set of software programs that helps organize information within a computer’s hardware. It can store information and retrieve it from memory systems or the hard drive. It can also direct applications and programs within the computer or from portable sources. In essence, an operating system communicates between the hardware and the programs as an organizational tool. 

1.  Memory management is the function that controlling and coordinating memory location and either allocated or free blocks to various programms to optimize overall system performance. There are 4 types of technique ways to manage memory. All this techniques has their own advantages on their own. In hardware memory management involves components that physically store data, such as RAM (Random Access Memory ), VRAM (Virtual RAM), GRAM (Graphical RAM), chips, memory caches and flash based SSDs (Solid Star Drives)

2.Device manager is control panel applet in Microsoft Windows operating systems it allows users to view and control the hardware attached to the computer. Hardware devices typically provide the ability to input data into the computer output data from the computer. Device manager is a feature of Microsoft Windows that detects and lists hardware devices and their status information. Device Manager is available in Microsoft Windows 95, 98, ME, 2000, 2003, XP, Vista, 7, 8, and 10.Device management does the following activities for device manager.Keeps track of all devices, decides which process gets the device allocates way, de-allocated device. Device manager important to make sure it’s well designed.

3.A file manager is a computer program that providers a user interface to  and folders.It has limited capalities and is designed to manage individual or group files, such as special office documents and records. A file management sustems is also known as a file manager.File manager is a software program that helps a user manage all the files on their computer.For example, all the managers allow the user to view, edit, copy and delete the files on their computer.

4.Network management is the process of administering and managing the computer networks of one or many organisations. Various services provided by network managers include fault analysis, performance management, provisioning of network and network devices.

5.The Process manager  is an integral part of any modern-day operating system (OS). The OS must allocate resources to processes, enable processes to share and exchange information, protect the resources of each process from other processes and enable synchronization among processes.

Essay 1

UK telephone calls, by category 1995-2002

    This bar chart illustrates UK's telephone calls, by 3 categories from 1995 to 2002. This bar chart discusses UK calls types local National, International calls and Mobile. 

The mobile calls, however grew steadily in the first five years and after that witnessed a quick rise to more than 40 billion compared to its beginning. Its interesting to note that through eight years of the period from 1995 to 2002, the local calls fixed line numbers of minutes remained the highest among three call forms that were used in the United Kingdom.

In comparison following to the bar chart, the highest jump in 1999 that was calls. 

Mobiles calls has increased compared to other lines. There was a gradual fall of local calls from 1999 to 2002.

In summary, mobile phone calls gained a significant popularity among the UK callers and as of 2002, the local calls-fixed line calling is still the most used calling among UK people After that, national and international call types were levelled off at other call types. It seen in bar chart that, UK's people have used the national and international call types that are continued at all times. 

This bar chart has constant fall at 2000 in 2002. It was reversed in national and Inernational call types by fixed line which were constantly rising at all years. And now, Mobile call is the trend in the UK and in the world. 

Finally, Mobile calls has new technical technology it was a gradual increase from 1999 to 2016 in the UK. And, local call type will have gradually decreased reach in the future.