MCA4010- MICROPROCESSOR

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ASSIGNMENT

PROGRAM	MCA(REVISED FALL 2012)
SEMESTER	FOURTH
SUBJECT CODE & NAME	MCA4010- MICROPROCESSOR
CREDITS	4
BK ID	B1778
MAX. MARKS	60

Note: Answer all questions. Kindly note that answers for 10 marks questions should be approximately of 400 words. Each question is followed by evaluation scheme.

Q. 1. Write short notes on:

a) Central Processing Unit

Answer:The central processing unit (CPU) of a computer is a piece of hardware that carries out the instructions of a computer program. It performs the basic arithmetical, logical, and input/output operations of a computer system. The

b) Memory Unit

Answer:In computing, memory refers to the computer hardware devices used to store information for immediate use in a computer; it is synonymous with the term "primary storage". Computer memory operates at a high speed, for example random-access memory (RAM), as a distinction from storage that provides slow-to-access program and data storage but offers higher capacities. If needed, contents of the computer memory can be transferred to secondary storage, through a memory management technique called "virtual

Most semiconductor memory is organized into memory cells or bistable flip-flops, each storing one bit (0 or 1). Flash memory organization includes both one bit per memory cell and multiple bits per cell (called MLC,

Q. 2. Write short notes on:

a) Bus Interface Unit (BIU)

Answer:In computer architecture, a bus (related to the Latin "omnibus", meaning "for all") is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including

b) Execution Unit (EU)

Answer:In computer engineering, an execution unit (also called a functional unit) is a part of the central processing unit (CPU) that performs the operations and calculations as instructed by the computer program. It may have its own internal control sequence unit, which is not to be confused with the CPU's main control unit, some registers, and other internal units such as a sub–arithmetic logic unit (sub-ALU) or a floating point unit (FPU), or some smaller and more specific components.  It is common for modern

Q. 3. Write short notes on:

a) REP Prefix

Answer:If the direction flag is clear, the CPU increments ESI and EDI after operating upon each string element. For example, if the direction flag is clear, then executing MOVS will move the byte, word, or double word at ESI to EDI and will increment ESI and EDI by one, two, or four. When specifying the REP prefix before this instruction, the CPU increments ESI and EDI for each element in the string. At completion, the ESI and EDI registers will be pointing at the first item beyond the strings.

b) Table Translation

Answer:A translation lookaside buffer (TLB) is a cache that memory management hardware uses to improve virtual address translation speed. The majority of desktop, laptop, and server processors includes one or more TLBs in the memory management hardware, and it is nearly always present in any hardware that utilizes paged or segmented virtual memory.

The TLB is sometimes implemented as content-addressable memory (CAM). The CAM search key is the virtual address and the search

Q. 4. Describe about Key-code Data Formats and FIFO Status Word formats.

Answer:Key Code Qualifier is an error-code returned by a SCSI device.

When a SCSI target device returns a check condition in response to a command, the initiator usually then issues a SCSI Request Sense command. This process is part of a SCSI protocol called Contingent Allegiance Condition. The target will respond to the Request Sense command with a set of SCSI sense data which includes three fields giving increasing levels of detail about the error:

    K - sense key - 4 bits, (byte 2 of Fixed sense

Q. 5. Write a note on

(a) RS 232 standard

Answer:In telecommunications, RS-232 is a standard for serial communication transmission of data. It formally defines the signals connecting between a DTE (data terminal equipment) such as a computer terminal, and a DCE (data circuit-terminating equipment, originally defined as data communication equipment), such as a modem. The RS-232 standard is commonly used in computer serial ports. The standard defines the electrical characteristics and timing of signals, the meaning of signals, and the physical size

(b) IEEE 488 standard

Answer:IEEE-488 is a short-range digital communications 8-bit parallel multi-master interface bus specification. It was created in the late 1960s for use with automated test equipment and is still in use for that purpose. IEEE-488 was created as HP-IB (Hewlett-Packard Interface Bus) and is commonly called GPIB (General Purpose Interface Bus). It has been the subject of several standards.

IEEE-488 specifies a 24-pin Amphenol

Q. 6. Write short note on:

a) Parallel Printer Interface (LPT)

Answer:Short for Line Printer Terminal, LPT is used by IBM compatible computers as an identification for the parallel port such as LPT1, LPT2, or LPT3. This is commonly required when installing a printer on an IBM compatible computer. The majority of all computers utilize LPT1 and do not have an option for another LPT port unless additional ports are added to the computer.

b) Universal Serial Bus (USB)

Answer:USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices. It is currently developed by the USB Implementers Forum.

Dear students get fully solved assignments

Send your semester & Specialization name to our mail id :

help.mbaassignments@gmail.com

or

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