Why is the time rate 60? This is due to a tradition of the ancient Roman Empire. China's luckiest numbers since ancient times are 5 and 9, while the Roman Empire is 6 and 0. So a long time ago, the time of the Roman Empire was decimal 60, which was adopted due to the cultural exchange between the empires and is still in use today. Hexadecimal system originated in Babylon. As for why Babylonians used hexadecimal, there are different opinions. Some people think that a year is 360 days, the sun takes one step every day (that is, once) and the Babylonians are familiar with sextuples to get 60 decimals; Some people think that 60 has factors such as 2, 3, 4, 5, 6, 10, 12, which simplifies the operation and so on. This hexadecimal system was first discovered by [〔Hincks〕] in 1854 on Babylonian clay tablets. These clay tablets are relics from about 2300 BC to 1600 BC. 1.4 = 82, 1.2 1 = 92,1.40 =102,2.1=/kloc. These formulas are very small. Such as1.40 =1× 60+40 =100 =102 and so on.
Many fields still use hexadecimal, such as 1 hour equals 60 minutes; 1 min equals 60 seconds; Angle system, etc. China's heavenly stems and earthly branches calendar is also hexadecimal.
I don't know if primary school students will thunder the teacher with this answer.
What is hexadecimal? Alas, you should know what level the landlord is from the questions asked by the landlord. The following brothers can understand it as long as they answer it simply and vividly. For example:
Our usual count:
0、 1、2、3、4...9,
10, 1 1, 12, 13... 19,
20,2 1,22,23...29,
.........
90,9 1,92,93...99,
100,101,102 ...109 and so on. ...
This is called 10 decimal, every 10 decimal 1.
Now look at the binary system.
0、 1、 10、 1 1、 100、 10 1、 1 10、 1 1 1 ....
And so on (represented by 10: 0, 1, 2, 3, 4, 5, 6, 7, 8 ...)
For the above information, every 2 1, the landlord tries to think about the direct relationship between these information.
Let's look at octal data: the corresponding 10 decimal system is
0, 1,2,3,4,5,6,7, (0, 1,2,3,4,5,6,7,)
10, 1 1, 12, 13, 14, 15, 16, 17, (8,9, 10, 1 1, 12, 13, 14,)
2 1,2 1,22,23,24,25,26,27...( 15, 16, 17, 18, 19,20,2 1,)
By now, 16 decimal should know what is going on, that is, the counting is based on 16 decimal.
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f (respectively representing 0- 15 in the radix 10).
If the above information is 10 decimal, then writing 9 is 10, one bit higher. But now it's 16, so if you write F( 16) later, you need to enter a digit, that is, 10. 10 in 10 is not 10 in 10 (if you can distinguish this, I believe Lou.
Here, 10 in 16 stands for 17 in 10.
Stop talking, okay? .....
If you want to learn Chinese, you must know hexadecimal!
Let's talk about what hexadecimal is.
Here are several ways to calculate decimal:
There is 10 cardinal number: 0 ~~ 9, with one decimal.
Binary system:
There are two cardinals: 0 ~~ 1, and every two enter one.
Octal system:
There are eight cardinal numbers: 0 ~~ 7, and every eighth is one.
Hexadecimal:
There are 16 cardinality: 0 ~ 9, a, b, c, d, e, F (A = 10, B = 1 1, C = 12, d =/kloc.
Let's talk about the decimal system that we often use, from 0 to 9, to the number 10, 1 is 10, and then according to the number1,12 ... the decimal system can be understood by children of several years old! Oh ~ and 16 decimal are the same. We count from 0 to 1, 2, 3…A, B…F, and when we count to f (that is, when we count to 16), one is 10, followed by the numbers 1 1 and 65438. One per 16!
Here are two examples of questions:
What is the conversion from (199) 10 to 16?
Answer:199 =16 *12+7 = C7.
(Note that in 16, A = 10, B = 1 1, C = 12, D = 13, E = 14, f.
How to add 7 to 16* 12?
99 ~ 16 = 12+7 So =C7
16 decimal is 0-F. C is 12, so it is C7.
For another example, decimal 10 equals hexadecimal a.
Convert the following 10 decimal number to 16 decimal number.
23050032 1 10242000
The answer is as follows
Remember the numbers 1, 16,256,4096, that is, the square of 16, the cube of16 and so on. According to the number to be converted, find the largest divisor among the above numbers, and do division to get quotient and remainder. Write down the quotient and repeat this step for the remainder.
Take 32 1 as an example: 32 1/256 = 1 remainder 65 == "Write down 165/ 16 = 4 remainder 1 ==" Write down/kloc-.
At your request, let's give another example. In fact, Chinese localization does not need any decimal formula of 16. The formula is to make people understand the decimal system of 16, but it has the opposite effect and makes people feel more complicated!
Now let's forget about the formula. I think of a way to help you understand hexadecimal easily. Let me give you a decimal example to help you understand the composition of decimal 0-9. Every decimal number is one, that is, if you count to 9, you will enter one.
Decimal system example:
0000 1
00002
00003
00004
00005
00006
00007
00008
00009
000 10
000 1 1
000 12
000 13
Anyone can know the decimal system, just give an example and count it.
There are 16 radix in hexadecimal, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f.
Hexadecimal meets hexadecimal one, that is, when counting to f, count repeatedly from 0.
Example:
00000
0000 1
00002
00003
00004
00005
00006
00007
00008
00009
0000A
0000B
0000C
0000D
0000E
0000F
000 10
000 1 1
000 12
000 13
000 14
000 15
000 16
000 17
000 18
000 19
000 1A
000 1B
000 1C
000 1D
000 1E
000 1F
00020
0002 1
00022
00023
00024
00025
00026
00027
00028
00029
0002A
0002B
0002C
0002D
0002E
0002F
00030
Although shivering, you may easily understand some formulas for converting 10 into 16. No, counting will!
What is the number under the example CB? Next is CC.
What's the number under ef? f0。
There is no Ef in the decimal system of 16, that is to say, 15 counts to f, and goes forward by one place. Just like the decimal system of 10, counting to 99 and going forward one is 100. Everyone knows the hexadecimal mentioned above! If you don't understand, learn slowly and use your head more!
What is hexadecimal and what is hexadecimal (English name: hexadecimal) is the representation of data in the computer. It is different from our daily life. It consists of 0-9 and A-F, and letters are case-insensitive. The corresponding relationship with 10 decimal system is: 0-9 corresponds to 0-9; A-F corresponds to10-15; N-ary numbers can be represented by numbers from 0 to (n- 1), and those exceeding 9 are represented by letters A-F. ..
What is the deposit reserve ratio? Brief introduction of deposit reserve ratio.
Deposit reserve refers to the deposit prepared by financial institutions in the central bank to ensure the needs of customers to withdraw deposits and settle funds. The ratio of the deposit reserve required by the central bank to its total deposit is the deposit reserve ratio.
Deposit reserve is a fund prepared to limit the credit expansion of financial institutions, ensure customers to withdraw deposits and meet the needs of fund settlement. The statutory deposit reserve ratio is the ratio of the deposit reserve paid by financial institutions to the central bank in accordance with regulations to the total deposits. This part is a risk reserve and cannot be used to issue loans. The higher the ratio, the greater the intensity of the tightening policy. The impact of changes in the deposit reserve ratio on commercial banks is as follows:
When the central bank raises the statutory reserve ratio, the ability of commercial banks to provide loans and create credit will decline. Because the reserve ratio increases, the money multiplier becomes smaller, which reduces the ability of the whole commercial banking system to create credit and expand the scale of credit. As a result, the monetary policy in society is tight, the money supply is reduced, interest rates are raised, and investment and social expenditure are correspondingly reduced. or vice versa, Dallas to the auditorium
For example, the deposit reserve ratio is 7%, which means that for every deposit of 6.5438+0 million yuan, financial institutions have to deposit 70,000 yuan in the central bank, and the funds used to issue loans are 930,000 yuan. If the deposit reserve ratio is raised to 7.5%, the loanable funds of financial institutions will be reduced to 925,000 yuan.
Under the deposit reserve system, financial institutions can't use all the deposits they absorb to issue loans, so they must keep certain funds, that is, deposit reserve, in case customers need to withdraw money. Therefore, the deposit reserve system is conducive to ensuring the normal payment of financial institutions to customers. With the development of financial system, deposit reserve has gradually evolved into an important monetary policy tool. When the central bank reduces the deposit reserve ratio, the funds available for loans by financial institutions increase, and the total amount of loans and money supply in society also increase accordingly; On the contrary, the total amount of social loans and money supply will decrease accordingly.
By adjusting the deposit reserve ratio, the central bank can influence the credit expansion ability of financial institutions, thus indirectly regulating the money supply. The excess deposit reserve ratio refers to the ratio of the reserves retained by commercial banks that exceed the statutory deposit reserve to all current deposits. From a morphological point of view, excess reserves can be cash or highly liquid financial assets, such as reserve deposits in central bank accounts.
Since 2006, China's economy has grown rapidly, but the contradiction in economic implementation has become more prominent, and the momentum of excessive investment growth has not diminished. One of the main reasons for the rapid growth of investment is the rapid growth of money and credit. Raising the deposit reserve ratio can correspondingly slow down the growth of money and credit and maintain the healthy and coordinated development of the national economy.
What is sixteen prohibitions and sixteen prohibitions? It is forbidden to do after the age of sixteen:
1. No sense of responsibility (I think this one is very important, so I put it in the first one).
1. It is forbidden to be bad for those who love me and those I love.
Don't lose your temper because of impulse.
It is forbidden to ignore important days.
4. Don't be depressed because of trifles.
5. Don't be narrow-minded and go looking for trouble.
....
What is sixteen steps is actually very simple, and now many places, especially big cities (Shenzhen. Dongguan. . . ) square dance this dance! You can learn by dancing with others!
It belongs to group dance! That's right, just 16 simple steps!
This is a kind of dance. Quite simple, one *** 16 step. Old people often jump around in public circles.