Which of the following Buses is/are present in a microcontroller for transferring data from one place to another ?
Address Bus, Data Bus, Control Bus
Address Bus, Data Bus, Control Bus option is correct.
Every microcontroller (and microprocessor) uses a classical three-bus organisation, called the system bus, to move information between the CPU, memory and peripherals.
1. Address Bus — unidirectional, driven by the CPU; it carries the address of the memory location or I/O port being accessed. Its width sets the addressable memory (16 lines → 64 KB on the 8051).
2. Data Bus — bidirectional; it carries the actual byte being read or written between CPU and memory/peripheral.
3. Control Bus — a collection of individual lines (RD, WR, PSEN, ALE, INT, RESET, clock) that sequence and qualify each bus cycle; without them the address and data lines have no meaning in time.
Any option that omits one of the three buses (data bus only, address bus alone, or data + address without control) leaves the transfer either untimed or without a target — a real transfer needs all three simultaneously.
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.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
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(ii) Interface
(iii) Nucleus
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Codes:
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(i) Machine language
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(iii) High level language
(iv) Natural language
Codes:
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Which part of the QR code represents the encoded data?
