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The keyboard is used to enter data, and other values ​​to the system microcontroller. Keyboard normally available in three configurations, namely: linear keyboard, matrix keyboard and the keyboard is encoded. Linear keyboard is used when the number of inputs to be given a little. The keyboard is generally used is a matrix keyboard. When the keyboard is connected to the ...

MCS-51 has 111 orders with 49 pieces of single-byte command type, 45 pieces of two-byte type commands, and 17 pieces of three-byte command type. This command can be grouped into four groups based on their function. MCS-51 has instructions with considerable amounts. Instructions can be incorporated into several groups. A list of the group can be seen in the table ...

Microcontroller can be likened to a computer that is in a special chip or a computer with a single chip. The word ‘micro’ claim that a piece of equipment that is small and the word ‘Controller (controller)’ states that this tool is used to control one or more functions of an object, event or process. This is also called an ...

Programming using assembly language (low level languages) requires an understanding of the register, including the name of each register of the controller chip used and the structure of the register itself. Physically, the work of a microcontroller can be described as a cycle of reading instructions stored in memory. Microcontroller specify the address of the program memory to be read, ...

Bus is a collection of lines connecting the above three components. Buses can be analogized as a public road in front of our house we can pass if the neighbors were heading home, office, etc. The difference is, in a general way at any given time there can be a lot of people or vehicles to pass through. while for ...

Microprocessors can not stand alone components to process the data, perform calculations, requires other components, so-called system microprocessor or microcomputer. The microcomputer architecture can be seen in the image below: Figure 2 Architecture microcomputers Microprocessor / CPU Microprocessor or CPU is the “brain” which is the main control of all operations in the computer system. Microprocessor taking the binary instructions ...