The United Nations currently recognizes 180 currencies that are used in 195 countries across the world the United States dollar is a popular currency and about 66 countries either peg their currency to the US dollar or use it as their currency
Answer:
1. Supercomputers
Supercomputers are very expensive and very fast. They are the most powerful computers we have in the world.
Supercomputers are optimized to execute only a small number of programs. This makes it possible for them to execute these few programs at a very high speed. Due to their inhibiting cost, they are used in high-end places like in scientific research centers. The supercomputer consists of thousands of processors, allowing it to clock in at very high speeds measured by petaflops.
These computer types are also very large in size due to the numerous parts and components involved in their design.
A good example of a supercomputer is Tianhe-2, which is located in the National Supercomputer Center in Guangzhou, China. It features 3.12 million cores, allowing it to run at speeds of 33.86 petaflops.
2. Mainframe Computers
These are large and expensive computers that are capable of supporting thousands of users simultaneously. They are mostly used by governments and large organizations for bulk data processing, critical applications, and transaction processing. They are ranked below supercomputers.
3. Minicomputers
Minicomputers are mid-sized computers. In terms of size and power, they are ranked below mainframes. A minicomputer is a multiprocessing system capable of supporting from 4 to about 200 users simultaneously.
The use of the term minicomputer has diminished since the introduction of microprocessors. These machines are now more commonly called midrange computers.
4. Microcomputers
A microcomputer, also known as a personal computer, is designed to be used by one user at a time. The term microcomputer relates to the microprocessor that is used for the purpose of processing data and instruction codes. These are the most common computer types since they are not very expensive
Trying to conduct business as usual while still training, learning, and migrating to a new system, is one of the main problems that can occur when implementing a large number of new systems within an organization. Linking up together problems that go hand in hand with a lengthy implementation process and the company conducting business as usual, this always becomes a very big issue. This practice of employees attending to their daily tasks of their main job and contributing to the software project at the same time can be detrimental and can cause software implementation to take much longer.
Can you be specific what do you want to send a friend request on? because just saying how do i send friend request is not specific>
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