Microprocessor
DS directive in 8085

None of these
Forces the assembler to reserve a specified number of consecutive bytes in the memory
Forces the assembler to reserve one byte of memory
Forces the assembler to reserve a specified number of bytes in the memory

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Microprocessor
In 8085 microprocessor system with memory mapped I/O, which of the following is true?

 Arithmetic and logic operations can be directly performed with the I/O data
 Devices have 8-bit address line
 Devices are accessed using IN and OUT instructions
 There can be maximum of 256 input devices and 256 output devices

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Microprocessor
Ready pin of microprocessor is used

 to provide direct memory access
 to indicate that microprocessor is ready to receive inputs
 to introduce wait state
 to indicate that microprocessor is ready to receive outputs

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