In the scientific sense, the word micro controller is represented by the Greek letter uc. The advent of low-cost computers on integrated circuits has completely transformed modern society marking the "Computer Age".
General-purpose micro controllers are used for computation, mobile phones and many such applications. A microcontroller is a computer with most of the necessary support chips on board. If you require higher computation power, the bit microcontroller is your best option.
If you are a beginner just getting started 8-bit microcontrollers are your best friend, as its architecture is simpler and has a programming model that is easier to understand. Also, most of the time it requires a single supply which lowers costs, and if funds are an issue, is again your best friend.
So, when designing embedded systems , a lot of thought has to go into how much power microcontrollers consume. The microcontroller is available in two package styles which provide different mounting styles. If you are just prototyping, or building a one off project, the PDIP package will suit your application.
If you are creating a final version of your product, or mass producing circuits, the TQFP style of package is a great choice. No, there are a plethora of 8-bit microcontrollers available for you to pick and choose.
The is just one of many. There are a number of different manufacturers that develop microcontrollers. The top companies that develop the bulk of microcontrollers used in the market today include:. So, an is called an 8-bit microcontroller because it processes data 8-bits every machine cycle. It has registers, data and address buses all capable of storing and transferring this data 8-bits at a time.
While a 8-bit microcontroller processes 8 bits of data a time, a bit microcontroller processes 16 bits and a bit microcontroller processes 32 bits. The bit and bit microcontrollers have the benefits of faster operation, and better precision. The downside however, is that they consume more power. Search for:. What does 8-bit mean?
A single bit is either a 0 or 1. A deeper look at why the is called an 8-bit microcontroller A microcontroller has registers, address buses and data buses. If we want to manipulate data to a processor or controller by performing subtraction, addition, etc. Each is used to hold the address of a byte in memory. Program instruction bytes are fetched from locations in memory that are addressed by the PC.
The stack pointer in the is 8-bits wide, and it can take a value of 00 to FFH. When the is initialized, the SP register contains the value 07H. This means that the RAM location 08 is the first location used for the stack. In Computer Architecture, the Registers are very fast computer memory which are used to execute programs and operations efficiently. This does by giving access to commonly used values, i.
Registers are also called internal memory or immediate access memory stores. A register is a small amount of fast temporary memory within the processor where the ALU or the CU can store and change values needed to execute instructions.
Begin typing your search term above and press enter to search. Press ESC to cancel. The B register is used in a similar manner, except that it can receive the extended answers from the multiply and divide operations. When not being used for multiplication and Division, the B register is available as an extra general-purpose register. The A and B registers can store up to 8-bits of data each. From Wikibooks, open books for an open world. Embedded Systems.
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