COMPUTER HARDWARE AND SOFTWARE
Introduction
When talking out of computers,there are two terms which must be correctly distinguished , hardware and software .copmputr hardware refers to all the physical devices in the computer like the CPU the monitor andv the printer that can be physical felt . soft6ware ia all of the instruction that a computer uses to do what you ask it to pieces of softwate are often called programs and an operayting system is a large program that helps all the other programs run.
COMPUTER HARDWARE
Modern digials computers are also conceptually similar regardle
GENERATION OF COMPUTERS ( CLASSIFICATION BY AGE OF TECHNOLOGY)
Each generation of computer I characterized by a major technological development that fundamentally changed the computers operates resulting increasingly smaller , cheaper , more powerful and efficient and reliable devices.
1. First Generation (1940-1956): VacuumTubes the first computer used vacuum tubes for circuitry and magnetic drums for memory and were often enormous,talking up entire rooms. There were very expensive to operate and in addition to using a great deal of electricity generated a lot of heat which was often the cause of malfunction first generation computers relied on mac
Each generation of computer I characterized by a major technological development that fundamentally changed the computers operates resulting increasingly smaller , cheaper , more powerful and efficient and reliable devices.
1. First Generation (1940-1956): VacuumTubes the first computer used vacuum tubes for circuitry and magnetic drums for memory and were often enormous,talking up entire rooms. There were very expensive to operate and in addition to using a great deal of electricity generated a lot of heat which was often the cause of malfunction first generation computers relied on mac
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DATA ADMINISTRATOR
The database administrators function is performed by a group of people whose experience level is generally greater than that required of any order groups within a data processing department.
It performs in service function within the organization. This function includes the provision of proper tools to the user community (e.g tools for accessing data ) creation of the database and ensuring security and integrity of the database and monitoring day to day operations on the database.
OPERATION MANAGER
The person in charge of the day to day. Running of the comp
The database administrators function is performed by a group of people whose experience level is generally greater than that required of any order groups within a data processing department.
It performs in service function within the organization. This function includes the provision of proper tools to the user community (e.g tools for accessing data ) creation of the database and ensuring security and integrity of the database and monitoring day to day operations on the database.
OPERATION MANAGER
The person in charge of the day to day. Running of the comp
The main disadvantages of computer (Disadvantages of computer)
Disadvantages of computer
The main disadvantages of computer arise from its technical nature.
• Computer errors. These are not easy detected, and may not even be apparent until some time to late to rectify such errors.
However, most of computers errors, are human mistakes, which are blamed on the computer. Some of these errors are rise out of negligence erroneous data or political reasons.
• It’s errors could be fatal as in the case of shooting down of an Iranian airliner in the in golf. In 1986, by an American, which was blamed on the failure of their computer to give proper inform
The main disadvantages of computer arise from its technical nature.
• Computer errors. These are not easy detected, and may not even be apparent until some time to late to rectify such errors.
However, most of computers errors, are human mistakes, which are blamed on the computer. Some of these errors are rise out of negligence erroneous data or political reasons.
• It’s errors could be fatal as in the case of shooting down of an Iranian airliner in the in golf. In 1986, by an American, which was blamed on the failure of their computer to give proper inform