MERITS AND DEMERITS OF WINDOW 7 OS

 

1. Windows 7 is faster than its predecessors, both in terms of installation and boot up time.
2. Calculator has been enhanced with some new features like unit conversion, calculations like fuel economy and auto lease payment.
3. WordPad in Windows 7 has improved much better and look similar to the Microsoft Office Word. It can be used to open, edit file names with docx extension which was earlier introduced with MS-Office 2007. Word prediction is the new feature in Word Pad. Realistic brush has been added in Paint.
4. Microsoft facilitates in windows 7, to download some eye-catching themes and background images from its own Microsoft website or from RSS feed. It allows the user to customize every part of the themes and save for our future use or send to the other windows 7 users.
5. It also supports advanced touch and handwriting recognition.
6. Windows 7 supports Virtual Hard Disks with the support of enhanced performances of multi core processors.
7. Windows Media Player 12 has got much enhanced features in the Windows 7 and drag and drop option has been added which were not there in the previous versions.
8. Windows 7 allows the user to make the best use of graphic cards from the different vendors.
9. Bitlocker is a feature which provides encryption for the internal drives in vista, but it is extended to the external drives in windows 7. This makes backup and restore much easier.
10. Default settings of User Account have been eliminated, to protect form the unauthorized software to be installed.
11. Windows 7 has included a new concept, jumplists which organize the recently used files as well as web pages.
12. More than that, it also allows the user to overcome the clutter in the desktop by introducing three new features Aero Peek, Aero shake and snap.
13. Home networking has been made much easier than its previous operating systems and is probably safe from hackers.
Disadvantages of Window7

    1. Some of the users are not satisfied with the new features, because, they need to buy out additional resources such as RAM, etc to make use of them.
    2. It is expensive than the previous Microsoft operating systems.
    3. Some of the users have problems such as; their system hangs after installing Win 7
    4. If the user has got an HP multifunction printer, and its driver being upgraded to the Windows 7, then the printer doesn’t response to the print commands. So, the user needs to go to the new HP solution Center to resolve this problem.
    5. Windows have specific themes for United Kingdom, Germany, Canada, Japan, South Africa and Australia, if the user is not from the above country and he wish to have a specific theme of his country, he will not get that, hence the user will not satisfied with that feature.
    6. Some of the features like Start Menu user interface, Windows Ultimate Extras, InkBall, Windows Photo Gallery, Windows Movie Maker, Windows Calendar Windows Mail called Windows Live Essentials were included in Vista are removed in Windows 7.

Whatever, the advantages and disadvantages Windows 7 has got, it is still better than its predecessors. One can afford to buy this product and make best use of it.

SMP has many uses in science, industry, and business which often use custom-programmed software for multithreaded (multitasked) processing. However, most consumer products such as word processors and computer games are written in such a manner that they cannot gain large benefits from concurrent systems. For games this is usually because writing a program to increase performance on SMP systems can produce a performance loss on uniprocessor systems. Recently, however, multi-core chips are becoming more common in new computers, and the balance between installed uni- and multi-core computers may change in the coming years.

Uniprocessor and SMP systems require different programming methods to achieve maximum performance. Therefore two separate versions of the same program may have to be maintained, one for each. Programs running on SMP systems may experience a performance increase even when they have been written for uniprocessor systems. This is because hardware interrupts that usually suspend program execution while the kernel handles them can execute on an idle processor instead. The effect in most applications (e.g. games) is not so much a performance increase as the appearance that the program is running much more smoothly. In some applications, particularly compilers and some distributed computing projects, one will see an improvement by a factor of (nearly) the number of additional processors.

In situations where more than one program executes at the same time, an SMP system will have considerably better performance than a uni-processor because different programs can run on different CPUs simultaneously.

Systems programmers must build support for SMP into the operating system: otherwise, the additional processors remain idle and the system functions as a uniprocessor system.

In cases where an SMP environment processes many jobs, administrators often experience a loss of hardware efficiency. Software programs have been developed to schedule jobs so that the processor utilization reaches its maximum potential. Good software packages can achieve this maximum potential by scheduling each CPU separately, as well as being able to integrate multiple SMP machines and clusters.

Access to RAM is serialized; this and cache coherency issues causes performance to lag slightly behind the number of additional processors in the system

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