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Tutorials / How-tos

How to Fix a Computer that Keeps Waking Up

Updated 12. April 2012 - 14:14 by v.laurie

Not too long ago I bought a new desktop PC. Whenever I put it to sleep, in no time flat it was awake again. A little research revealed that this is not an uncommon problem and can have several possible sources. Malware infections are sometimes the cause but more often it is some device that is waking the machine up and that was the case for me. In this tip, I will describe several settings in your system that may keep waking up your PC. The discussion is for Windows Vista/7. You will generally need administrator privileges to make system changes.

How to Get the Best Use from the 7-Zip File Archiver Program

Updated 20. February 2012 - 1:02 by v.laurie

Just about every PC user encounters compressed files in formats such as ZIP and RAR at one time or the other. The most common format is ZIP and Windows has a built-in function for managing ZIP files. However, it is a pretty minimal feature. You don’t have to be a power user to find that you prefer to install and use one of the free multi-featured file archivers.

Understanding The Windows 7 UAC

Updated 1. May 2012 - 7:15 by Concerned User

Understanding and optimizing the UAC in Windows 7

Table of Contents

1. Introduction

2. How and why a UAC prompt might occur

How to Easily Insert Special Symbols and Characters in Windows - Part II

Updated 17. January 2012 - 15:07 by v.laurie

The procedure in the preceding Part I is limited to inserting something over a hundred characters. But there is a much larger universe of symbols and characters available if you use hexadecimal as input. The Alt key, the numeric keypad, and the regular keyboard are involved in this particular procedure. (You may have to first make a very simple Registry edit for this to work. See the section below.) Here is how to to insert a hexadecimal coded character:

How to Easily Insert Special Symbols and Characters in Windows - Part I

Updated 17. January 2012 - 21:01 by v.laurie

Did you ever want to put a special character like the cent sign (¢) or the British pound sign (£) into a document or email? Or use the correct symbols for Spanish or other languages? Regular users of word processing programs like Microsoft Word probably already know how to do this but many average PC users are not aware that easy methods of inserting special characters are readily available.

What is 256-bit?

Updated 10. January 2012 - 22:35 by Remah

256-bit is a measure of computer information and an attribute of computer systems.

256-bits makes awfully large numbers (2256) so it is a common length for cryptography keys.

 

What is 128-bit?

Updated 10. January 2012 - 22:39 by Remah

128-bit is a measure of computer information and an attribute of computer systems.

Each bit can have two values so 128 bits can have 2128 values. This is too big for my brain to cope with but it is probably the future of computing. Just at the the moment there's not a lot happening in the 128-bit space.

 

What is 64-bit?

Updated 10. January 2012 - 9:35 by Remah

64-bit is a common measure of computer information and an attribute of computer systems.

Each bit can have two values so 64 bits can have 264 values. This is equivalent to over 18 quintillion (billion times billion) values.

 

What is 32-bit?

Updated 10. January 2012 - 9:33 by Remah

32-bit is a common measure of computer information and an attribute of computer systems.

Each bit can have two values so 32 bits can have 232 values. This is equivalent to over 4 billion values (4,294,967,296 in decimal and 100000000 in hexadecimal).

What is 16-bit?

Updated 10. January 2012 - 9:31 by Remah

16-bit is a common measure of computer information and an attribute of computer systems.

Each bit can have two values so 16 bits can have 2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2 = 216 values. This is equivalent to 65,536 in decimal and 10000 in hexadecimal.

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