What does the plus minus sign of digital currency mean

1. The addition and subtraction sign is the operation method.
addition is the combination of two or more things.
subtraction is the separation of a pile of things,

2. From your picture,
What do you mean by the plus and minus sign when you ask the question,
the plus and minus sign means that it is above or below the normal reference value

3. A currency pair is a foreign exchange exchange exchange rate composed of two currencies, which is represented by two ISO codes plus a separator, such as GBP / USD. The first code represents "basic currency" and the other "secondary currency". The main currency pairs in foreign exchange market are those containing US dollar, such as euro / US dollar (EUR / USD), pound / US dollar (GBP / USD), Australian dollar / US dollar (AUD / USD), etc. When you trade currency, you buy the base currency and sell the valuation currency. The order of currency pairs is usually the same. For example, currency pair USD / JPY (USD is the base currency and JPY is the valuation currency). The order of currency pairs you see will not change. So, whether you buy or sell depends on the direction of the transaction. For example: USD / JPY - you can buy JPY with USD, or you can buy USD with JPY.

4. Manual automatic gear, manual up and down gear!

5. This meaning mainly depends on the detailed introction of the bill. He'll make it clear what a minus sign means. In general, a minus sign represents arrears

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7. Plus sign is buy, minus sign is sell

8. Plus sign is charge, minus sign is consumption!

9. Generally, the plus sign will not be displayed, which means that a credit card transaction occurs. The minus sign ("-") means that the transaction is a repayment or a credit card refund
when the repayment amount of a credit card is greater than the amount owed, the extra part will be displayed as a negative number, which is the so-called excess payment
1. The excess payment is accumulated in the credit line, which will be used preferentially in the next consumption
2. When the excess payment is taken out, it may need to pay the handling fee; Merchants credit card excess payment cash need to pay a fee, generally 1% / transaction, the minimum 10 yuan / transaction, some banks do not need a fee.

10. The sign indicates that the number may be either positive or negative, excluding 0, which is neither positive nor negative