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A computer program was a set of instructions written by a programmer to run a computer or a specific creation such as a holographic program. One of the assumptions for Arthur Malencon's death, killed by the laser drill, was a malfunctioning computer system. Later, it was revealed that a lifeform of the planet was responsible for the death. (TNG: "Home Soil" ) The Iconian probe encountered by the USS Enterprise-D in 2365 transmitted a computer program to the starship which started rewriting the ship computer's software in its own image. (TNG: "Contagion" )

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  • Computer program
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  • A computer program was a set of instructions written by a programmer to run a computer or a specific creation such as a holographic program. One of the assumptions for Arthur Malencon's death, killed by the laser drill, was a malfunctioning computer system. Later, it was revealed that a lifeform of the planet was responsible for the death. (TNG: "Home Soil" ) The Iconian probe encountered by the USS Enterprise-D in 2365 transmitted a computer program to the starship which started rewriting the ship computer's software in its own image. (TNG: "Contagion" )
  • In practical terms, a computer program (also called simply a program) might include anywhere from a dozen instructions to many millions of instructions for something like a word processor or a web browser. A typical modern computer can execute billions of instructions every second and nearly never make a mistake over years of operation.
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abstract
  • A computer program was a set of instructions written by a programmer to run a computer or a specific creation such as a holographic program. One of the assumptions for Arthur Malencon's death, killed by the laser drill, was a malfunctioning computer system. Later, it was revealed that a lifeform of the planet was responsible for the death. (TNG: "Home Soil" ) The Iconian probe encountered by the USS Enterprise-D in 2365 transmitted a computer program to the starship which started rewriting the ship computer's software in its own image. (TNG: "Contagion" )
  • In practical terms, a computer program (also called simply a program) might include anywhere from a dozen instructions to many millions of instructions for something like a word processor or a web browser. A typical modern computer can execute billions of instructions every second and nearly never make a mistake over years of operation. Large computer programs may take teams of programmers years to write and the probability of the entire program having been written completely in the manner intended is unlikely. Errors in computer programs are called bugs. Sometimes bugs are benign and do not affect the usefulness of the program, in other cases they might cause the program to completely fail (crash), in yet other cases there may be subtle problems. Sometimes otherwise benign bugs may be used for malicious intent, creating a security vulnerability. Since computers merely execute the instructions they are given, bugs are nearly always the result of programmer error or an oversight made in the program's design. However, computer hardware may fail or may itself have a fundamental problem that produces unexpected results in certain situations. In most computers, individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command to add two numbers together would have one opcode, the command to multiply them would have a different opcode and so on. The simplest computers are able to perform any of a handful of different instructions, the more complex computers have several hundred to choose from — each with a unique numerical code. Since the computer's memory is able to store numbers, it can also store the instruction codes. This leads to the important fact that entire programs (which are just lists of instructions) can be represented as lists of numbers and can themselves be manipulated inside the computer just as if they were numeric data. The fundamental concept of storing programs in the computer's memory alongside the data they operate on is the crux of the von Neumann, or stored program, architecture. In some cases, a computer might store some or all of its program in memory that is kept separate from the data it operates on.
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