Advantages disadvantages of computers free essay sample

Large scientific and research laboratories as well as the government organizations have extra ordinary demand for processing data which required tremendous processing speed, memory and other services which may not be provided with any other category to meet their needs. Therefore very large computers used are called Super Computers. These computers are extremely expensive and the speed is measured in billions of instructions per seconds. 2. Main Frame Computers The most expensive, largest and the most quickest or speedy computer are called mainframe computers. These computers are used in large companies, factories, organizations etc. the mainframe computers are the most expensive computers, they cost more than 20 million rupees. In this computers 150 users are able to work on one C.P.U. The mainframes are able to process 1 to 8 bits at a time. They have several hundreds of megabytes of primary storage  and operate at a speed measured in nano second. 3. Mini Computers Mini computers are smaller than mainframes, both in size and other facilities such as speed, storage capacity and other services. We will write a custom essay sample on Advantages disadvantages of computers or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page They are versatile that they can be fitted where ever they are needed. Their speeds are rated between one and fifty million instructions per second (MIPS). They have primary storage in hundred to three hundred megabytes range with direct access storage device. 4. Micro Computers These are the smallest range of computers. They were introduced in the early 70’s having less storing space and processing speed. Micro computers of todays are equivalent to the mini computers of yesterday in terms of performing and processing. They are also called â€Å"computer of a chip† because its entire circuitry is contained in one tiny chip. The micro computers have a wide range of applications including uses as portable computer that can be plugged into any wall. 5. Laptop Computers The smallest computer in size has been developed. This type of small computers look like an office brief case and called LAPTOP computer. The laptops are also termed as PORTABLE COMPUTERS. Due to the small size and light weight, they become popular among the computer users. The businessmen found laptop very useful, during traveling and when they are far away frm their desktop computers. A typical laptop computer has all the facilities available in microcomputer. The smallest laptops are called PALMTOP.