People made tools to help them remember where they were in a math problem. A computer is a machine that accepts data as input, processes that data using programs, and outputs the processed data as information. In the 1950s computers were built out of mostly vacuum tubes. Nearly all modern computers use the stored-program architecture. can execute instructions in less than one-billionth of a second. Recall that a computer's memory holds data only temporarily, at the time A list of instructions is called a program and is stored on the computer's hard disk. For example, an alarm clock is an embedded computer: it tells the time. Computers are used to control large and small machines which in the past were controlled by humans. memory, executes a computer program. program instructions or data for only as long as the program they pertain to Some people argue that this is the first programmable machine.[1]. Modern computers can do billions of calculations in a second. can compare numbers, letters, or special characters. It was expensive, and reports took a long time. Found worksheet you are looking for? running is not feasible for three reasons: To see how registers, memory, and second storage all work together, let us After I turn right at the light, how far to the right do I turn, and do you mean the traffic light or the streetlight on the corner? He built a mechanical theater which performed a play lasting 10 minutes and was operated by a complex system of ropes and drums. Space on the counter top is the equivalent of RAM memory - 127.0.0.1: This is called the loopback address, meaning your computer's way of identifying itself, whether or not it has an assigned IP address. If more than one program is running at once (often the case on large If you’re giving a friend instructions to get to your house, for example, you may write down the following information: Of course, if you try giving these instructions to a computer, the computer will get confused and wants to know the following additional information: 1. on; data is destroyed when the machine is turned off. recipe is the control unit - it tells you what to do on the cutting data storage in the storage hierarchy. They also need less power and do not break down as much as vacuum tubes. The compiler translates the user's instructions into binary code (machine code) that the computer will understand and do what is needed. The National Mission for Clean Ganga (NMCG) is organising the annual ‘Ganga Utsav’ on November 2nd , 3rd & 4th, 2020 on a virtual platform. Most types of memory only store items while the computer is turned The two principal characteristics of a computer are: It responds to a specific instruction set in a well-defined manner and it can execute a prerecorded list of instructions call a program. Some operating systems can have simple command lines or a fully user-friendly GUI. 3. storage. the reading will The first of these was completed in Great Britain. If you want to make your own video game, for example, you need to solve some of the following problems: The simpler the problem is that you need to solve, the more easily you can write a program that tells the computer how to work. Logical operations can test for three conditions: Memory and Storage The cutting board is the ALU - the work gets Advantages Of CBSE NCERT Class 2 Computer Worksheets . of a second, whereas those speed demons known as supercomputers Download Worksheets for Class 2 Computer made for all important topics and is available for free download in pdf, chapter wise assignments or booklet with... Download syllabus for Class 2 Computer issued by CBSE and NCERT for 2020. here to continue the required reading. Because the world is full of problems, the number and variety of programs that people can write for computers is practically endless. It can He could use punch cards to tell the loom what to do, and he could change the punch cards, which means he could program the loom to weave the pattern he wanted. Free Sample Papers with solutions for Class 2 Computer,... Download past year Question Papers for Class 2 Computer as per CBSE NCERT KVS syllabus with solutions in pdf free. Apple has made several popular examples of all-in-one computers, such as the original Macintosh of the mid-1980s and the iMac of the late 1990s and 2000s. These programming languages are more like the language with which one talks and writes every day. This is a very 2. Worksheet will open in a new window. Unlike your personal computer, you cannot use your clock to play Tetris. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness.