Direct and indirect currencies

In the currency market, the euro and the pound are the base currencies against the dollar, and therefore are the first to be symbolized
As follows: EUR / USD and GBP / USD.
The price to be placed in front of either of the two previous versions is the amount required to be paid from the dollar to get one euro or one pound.
When we say EUR / USD = .9000
This means that you are required to pay $ 9.000 for one euro.
When we say: GBP / USD = 1.5000
That means that the required payment of $ 1.5000 = to get one pound.
Currencies that are the base currencies are called against the US dollar in direct currencies.
Direct currencies
Are currencies whose symbol is placed before the dollar symbol and is the base currency
The most important currencies in the international currency market are
EUR / USD
GBP / USD
AUD / USD

In the currency market, the dollar was the base currency against the yen and the Swiss franc. The dollar symbol is first placed in the formula and then the yen or franc is placed.
As follows: USD / JPY and USD / CHF.
When we say: USD / JPY = 120
That means that the yen is required to pay ¥ 120 for one dollar. Since the dollar is the base currency .
When we say: USD / CHF = 1.4000
This means that the required payment of CHF = 1.4000 to get one dollar.
The currencies against which the dollar is denominated are the base currency of the indirect currencies.
Indirect currencies
Are the currencies in which the dollar symbol is placed before it and the dollar is the base currency
The most important currencies in the international currency market are
USD / JPY
CHF / CHF
CAD / CAD

Why was the euro and the pound sterling to be the direct currency while the yen and the franc were indirect currencies?
Answer: It’s just a fix .. !!
Perhaps its purpose is simplification because if we want to know how much dollars should be paid to get one yen, it takes a lot of fractions, so the dollar against the franc and the yen is the base currency.
In fact, this difference in setting symbols between direct and indirect currencies has implications for many of the things that will come to you later.