Conservapedia - User contributions [en]

Talk:Binary system

2020-08-14T15:59:15Z

QWERTYL: added comment

Shouldn't we merge this with binary? I think so.
:I think so too

Discussion::Site goes down a lot

2020-08-14T15:55:27Z

QWERTYL: added comment

I have experienced this site go down several times with a "504 error" or a "500 error". Has anyone else experienced this and does anyone plan to fix this? {{unsigned|QWERTYL}}
:I've seen suggestions that this is the result of some kind of DDOS attack. I doubt it for two reasons: First, I don't think there are a significant number of people who consider Conservapedia to be harmful; there are an enormous number of web sites out there, many of which are disliked by some people. Second, and more importantly, the symptoms are not consistent with a DDOS attack. They suggest that an admin is tinkering with the software. One of the things that I see is a page saying that I need to log in. This is an option that the wiki software provides to administrators. Some wikis operate that way; Conservapedia does not. I suspect that the setting of that option was temporary collateral damage to some ongoing administrative work. Let's all be patient and hope that things clear up soon. [[User:SamHB|SamHB]] ([[User talk:SamHB|talk]]) 14:00, 13 August 2020 (EDT)
::I joined recently so I was wondering if this was going on for some time. It actually just happened to me again. Thanks for clearing things up, and I hope this gets resolved soon! {{unsigned|QWERTYL}}

:::So basically, the site has been performing poorly due to an unusually high traffic load. It could be a weak D/DoS attack of sorts, or it could just be that we are getting "too much" legitimate traffic. In any case, we are in the process of upgrading the site to use better hosting, which should improve its performance. For the next few days, I suggest you save a copy of your edits on your computer, since in the process of migration, some changes might be lost. Hopefully this will resolve the problem.
:::There has been some tinkering going on the past couple days to try to diagnose and resolve the problem, but this was in response to the 500 and 504 errors, not the cause. However, if you are getting 4xx errors, like 403, that is probably due to the repair/mitigation attempts. --[[User:DavidB4|DavidB4]] ([[User talk:DavidB4|TALK]]) 16:07, 13 August 2020 (EDT)
::::Thanks for the info

Discussion::Site goes down a lot

2020-08-13T18:04:11Z

QWERTYL: added comment

I have experienced this site go down several times with a "504 error" or a "500 error". Has anyone else experienced this and does anyone plan to fix this?
:I've seen suggestions that this is the result of some kind of DDOS attack. I doubt it for two reasons: First, I don't think there are a significant number of people who consider Conservapedia to be harmful; there are an enormous number of web sites out there, many of which are disliked by some people. Second, and more importantly, the symptoms are not consistent with a DDOS attack. They suggest that an admin is tinkering with the software. One of the things that I see is a page saying that I need to log in. This is an option that the wiki software provides to administrators. Some wikis operate that way; Conservapedia does not. I suspect that the setting of that option was temporary collateral damage to some ongoing administrative work. Let's all be patient and hope that things clear up soon. [[User:SamHB|SamHB]] ([[User talk:SamHB|talk]]) 14:00, 13 August 2020 (EDT)
::I joined recently so I was wondering if this was going on for some time. It actually just happened to me again. Thanks for clearing things up, and I hope this gets resolved soon!

Binary system

2020-08-13T17:26:23Z

QWERTYL: Edit headers

The '''binary system''' is a way of representing numbers in base 2, i.e. using only the digits 0 and 1. The term 'Binary' means ''composed of two parts'' and comes from the Latin, originally meaning "two by two". Binary, or base 2, is one of many possible [[Number Systems]].

A number written in the system can be denoted by following it with a subscript 2, i.e. 2. Each digit represents the number of a power of 2 in the complete number, similarly to in the [[decimal system]], where each digit represents the number of a power of 10. The power is defined by the number of digits in the number from right to left through the digit, minus 1, e.g. 1002, where the digit 1 is the third digit from the right, and thus represents 22, or 4. While it is generally impractical for [[human]] use, it is the mainstay of modern [[computing]]. A binary system is also used in [[electronics]], which commonly uses '''0''' to mean "no voltage is present" '''1''' to mean "a voltage is present". Binary notation is used in circumstances in which a thing is in one of two possible conditions and no other condition is possible; the switch is on or the switch is off, the page has data on it or the page has no data.

==Operations==

===Successor Function===

To increment a binary number, follow this rule:

#Current digit is the end digit
#Change the current digit
# If current digit = 1
##Then:
###Shift current digit to away from the end digit
###Go to step 2
##Else:
###You're done.

===Addition===

Binary addition is fairly simple, making for efficient use in computers. To add one bit (digit) binary numbers, use the following table:
{| class="wikitable"
|-
! X
! Y
! X + Y
! Carry
|-
| 0
| 0
| 0
| 0
|-
| 1
| 0
| 1
| 0
|-
| 0
| 1
| 1
| 0
|-
| 1
| 1
| 0
| 1
|-
|}

to add a multiple digit number, add the bits (digits) individually using the table, and add the carry if necessary. Consider the following example:

000000110- Previous Addition's carry
1000110110 X
+
0110001010 Y
-----------------
1110111000

===Subtraction===
Subtraction in binary can be carried out similar to decimal notation, however, there is a more efficient way, which is usually used in computers. Negative numbers a written in "Two's complement notation". In this notation, You "flip" the digits in the binary number and add one. For example,

<blockquote>
-10011 = 01100 + 1 = 01101
</blockquote>

To do subtraction, you add a number to its complement and ignore the final carry.

<blockquote>
5 - 2 = 101 - 010 = 101 + (101 + 1) = 101 + 110 = [1]011 = 011 = 3
</blockquote>

Note that this method requires the amount of digits to be fixed.

===Multiplication===
Multiplication in binary is far more simple than multiplication in decimal. To multiply two binary numbers X * Y, use the following algorithm:
#set a to 0
#start at the rightmost digit of the X
#for the nth digit (from the right, starting with 0)
##If the digit is zero, continue
##If the digit is one,
###Append n zeros to the end of Y and add this to a
#a is now equal to X * Y

For Example:

1010 X *
1101 Y
----------------
'''0000'''
'''1101'''0
'''0000'''00
'''1101'''000
---------------
10000010

=First Numbers=
The first 16 binary digits:
{|style="text-align:center"
!Decimal!!Colspan=2 |Binary
|-
|width=50px|0
|width=50px align="right"|0
|width=10px|
|-
|1
|align="right"|1
|-
|2
|align="right"|10
|-
|3
|align="right"|11
|-
|4
|align="right"|100
|-
|5
|align="right"|101
|-
|6
|align="right"|110
|-
|7
|align="right"|111
|-
|8
|align="right"|1000
|-
|9
|align="right"|1001
|-
|10
|align="right"|1010
|-
|11
|align="right"|1011
|-
|12
|align="right"|1100
|-
|13
|align="right"|1101
|-
|14
|align="right"|1110
|-
|15
|align="right"|1111
|-
|16
|align="right"|10000
|}

==See also==
* [[Binary Code]]
* [[Binary Function]]
* [[Binary Compound]]

== External links ==
*[http://forums.cisco.com/CertCom/game/binary_game_page.htm?site=celc A binary numbering game]
*[http://woodgears.ca/marbleadd/index.html= How to make binary numbers]

[[Category:Mathematics]]

Discussion::Site goes down a lot

2020-08-13T17:24:30Z

QWERTYL: Create Discussion Page

I have experienced this site go down several times with a "504 error" or a "500 error". Has anyone else experienced this and does anyone plan to fix this?

Binary system

2020-08-12T21:01:30Z

QWERTYL: Added A list of opperations and how they work; Also added headings to make the article more readable

The '''binary system''' is a way of representing numbers in base 2, i.e. using only the digits 0 and 1. The term 'Binary' means ''composed of two parts'' and comes from the Latin, originally meaning "two by two". Binary, or base 2, is one of many possible [[Number Systems]].

A number written in the system can be denoted by following it with a subscript 2, i.e. 2. Each digit represents the number of a power of 2 in the complete number, similarly to in the [[decimal system]], where each digit represents the number of a power of 10. The power is defined by the number of digits in the number from right to left through the digit, minus 1, e.g. 1002, where the digit 1 is the third digit from the right, and thus represents 22, or 4. While it is generally impractical for [[human]] use, it is the mainstay of modern [[computing]]. A binary system is also used in [[electronics]], which commonly uses '''0''' to mean "no voltage is present" '''1''' to mean "a voltage is present". Binary notation is used in circumstances in which a thing is in one of two possible conditions and no other condition is possible; the switch is on or the switch is off, the page has data on it or the page has no data.

==Operations==

===Successor Function===

To increment a binary number, follow this rule:

#Current digit is the end digit
#Change the current digit
# If current digit = 1
##Then:
###Shift current digit to away from the end digit
###Go to step 2
##Else:
###You're done.

===Addition===

Binary addition is fairly simple, making for efficient use in computers. To add one bit (digit) binary numbers, use the following table:
{| class="wikitable"
|-
! X
! Y
! X + Y
! Carry
|-
| 0
| 0
| 0
| 0
|-
| 1
| 0
| 1
| 0
|-
| 0
| 1
| 1
| 0
|-
| 1
| 1
| 0
| 1
|-
|}

to add a multiple digit number, add the bits (digits) individually using the table, and add the carry if necessary. Consider the following example:

000000110- Previous Addition's carry
1000110110 X
+
0110001010 Y
-----------------
1110111000

==Subtraction==
Subtraction in binary can be carried out similar to decimal notation, however, there is a more efficient way, which is usually used in computers. Negative numbers a written in "Two's complement notation". In this notation, You "flip" the digits in the binary number and add one. For example,

<blockquote>
-10011 = 01100 + 1 = 01101
</blockquote>

To do subtraction, you add a number to its complement and ignore the final carry.

<blockquote>
5 - 2 = 101 - 010 = 101 + (101 + 1) = 101 + 110 = [1]011 = 011 = 3
</blockquote>

Note that this method requires the amount of digits to be fixed.

==Multiplication==
Multiplication in binary is far more simple than multiplication in decimal. To multiply two binary numbers X * Y, use the following algorithm:
#set a to 0
#start at the rightmost digit of the X
#for the nth digit (from the right, starting with 0)
##If the digit is zero, continue
##If the digit is one,
###Append n zeros to the end of Y and add this to a
#a is now equal to X * Y

For Example:

1010 X *
1101 Y
----------------
'''0000'''
'''1101'''0
'''0000'''00
'''1101'''000
---------------
10000010

=First Numbers=
The first 16 binary digits:
{|style="text-align:center"
!Decimal!!Colspan=2 |Binary
|-
|width=50px|0
|width=50px align="right"|0
|width=10px|
|-
|1
|align="right"|1
|-
|2
|align="right"|10
|-
|3
|align="right"|11
|-
|4
|align="right"|100
|-
|5
|align="right"|101
|-
|6
|align="right"|110
|-
|7
|align="right"|111
|-
|8
|align="right"|1000
|-
|9
|align="right"|1001
|-
|10
|align="right"|1010
|-
|11
|align="right"|1011
|-
|12
|align="right"|1100
|-
|13
|align="right"|1101
|-
|14
|align="right"|1110
|-
|15
|align="right"|1111
|-
|16
|align="right"|10000
|}

==See also==
* [[Binary Code]]
* [[Binary Function]]
* [[Binary Compound]]

== External links ==
*[http://forums.cisco.com/CertCom/game/binary_game_page.htm?site=celc A binary numbering game]
*[http://woodgears.ca/marbleadd/index.html= How to make binary numbers]

[[Category:Mathematics]]