Conditional expressions and conditional constructs are features of a programming language which perform different computations or actions depending on whether a programmer-specified boolean condition evaluates to true or false. Answer: A, 84 The maximum addressing capacity of a micro processor which uses 16 bit database & 32 bit address base is Answer: A, 69 If the value V(x) of the target operand is contained in the address field itself, the addressing mode is The examples below illustrate the calling convention used by OS/360 and successors prior to the introduction of 64-bit z/Architecture; other operating systems for System/360 might have different calling conventions. Later Libras, including the 590, also incorporate Intel Xeon processors and can run the Burroughs large systems architecture in emulation as well as on the MCP CMOS processors. C. High level instruction. Answer: C, 117. n bits in operation code imply that there are ___________ possible distinct operators. And the console typewriter allowed entering data and getting output in an interactive fashion, instead of just getting the normal printed output from a blind batch run on a pre-packaged data set. The performance of cache memory is frequently measured in terms of a quantity called The microcode level that specified four bit tags was referred to as level Gamma. A. Boolean values B. whole numbers The calling program is responsible for saving ACC, EXT, X1, and X2. Some languages, like Perl[6] and Ruby,[7] have a redo statement that restarts the current iteration from the start. Hard disk B. D. Response time. Most computers are in this category, including the IBM compatible microcomputers. Which of the following code is used in present day computing was developed by IBM corporation? A. AR (Address Register) B. XR (Index Register) Procedure calls and returns were expensive, because a number of operations had to be performed to maintain the stack. Reader Off/Reader On This rocker turned the reader mechanism off or on. (A) Virtual memory Both Python's for and while loops support such an else clause, which is executed only if early exit of the loop has not occurred. In dynamic languages, the cases may not be limited to constant expressions, and might extend to pattern matching, as in the shell script example on the right, where the *) implements the default case as a glob matching any string. (3) is permanent storage (C) Important number We will be thrilled to have you partner us in preparing & serving food to customers that brings goodness in their lives. (A) 9s complement (D) 100100 & 011011 The time interval between adjacent bits is called the_____. D. none of above (Even "privileged users", who normally have essentially root privilege, may be unable to do this depending on the configuration chosen by the site.) Interrupt mode B. Computers use addressing mode techniques for ____________. By the late 1950s its computing equipment was still limited to electromechanical accounting machines such as the Sensimatic. Middleware such as COMS (introduced around 1984) receive messages from around the network and dispatch these messages to specific handling processes or to an MCS (Message Control System) such as CANDE ("Command AND Edit," the program development environment). ", This publication describes the IBM 1443 Printer as an on-line output unit for the 1620 Data Processing Systems, :Models 1 and. Answer: A, 86 The average time required to reach a storage location in memory and obtain its contents is called (B) Underflow (B) Logical address C. the branch address is obtained from a register in the processor There were a set of instructions that wrote to the typewriter, or read from it. C does not include a multilevel break, and the usual alternative is to use a goto to implement a labeled break. The average time required to reach a storage location in memory and obtain its contents is called_____. C. Accumulator D. Register Answer: B, 141. _________ register keeps tracks of the instructions stored in program stored in memory. (D) Logical instructions. (C) register mode. In those machines, there was also going to be an nmode (native mode), but this was dropped[citation needed], so you may often hear the B5000 successor machines being referred to as "emode machines". A computer program is a sequence or set of instructions in a programming language for a computer to execute.Computer programs are one component of software, which also includes documentation and other intangible components.. A computer program in its human-readable form is called source code.Source code needs another computer program to execute because The interpretation engine chooses an instruction from the module being interpreted. This architecture is now called emode (for emulation mode) since the B5000 architecture has been implemented on machines built from Intel Xeon processors running the x86 instruction set as the native instruction set, with code running on those processors emulating the B5000 instruction set. The table below lists Alphameric mode characters (and op codes). The addressing mode used in an instruction of the form ADD X Y, is _____. B. static RAM (B) Main memory Actual storage for an array segment would be allocated at run time only if an element in that segment were accessed, and all elements of a created segment would be initialised to zero. (B) Branch and save return address, (C) Branch and shift address Slave can be implemented differently to minimize semantic errors. Traditional computer architecture that operates with large sets of possible instructions. A. First four words of integer arguments. It was produced as inexpensively as possible, to keep the price low. There are less than 200 operators, all of which fit into 8-bit syllables. Floating-point numbers are represented imprecisely due to hardware constraints, so a loop such as. Database designers and administrators compile database descriptions to generate DMALGOL code tailored for the tables and indexes specified. If this switch is disabled on the Master, all drives are disabled regardless of the state of their own switches. (A) Function Used for some operating-system-specific special purpose, or an additional caller-saved register. (B) flip-flop Answer: A, 132. (A) Combinational circuit "I always thought it was one of the most innovative examples of combined hardware/software design I've seen, and far ahead of its time. Ans: Microprocessor, assembler, 92 In an operation performed by the ALU, carry bit is set to 1 if the end carry C 8 is ________. The first machine in the family was the B5000 in 1961. While the Lower console for both the Model 1[18] and the Model 2[19] IBM 1620 systems had the same lamps and switches, the Upper console of the pair were partly different. It uses associative mapping. (D) None of these Leaf routines do not need to save or restore the link register; non-leaf routines must save the return address before making a call to another routine and restore it before it returns, saving it by using the Move From Special Purpose Register instruction to move the link register to a general-purpose register and, if necessary, then saving it to the stack, and restoring it by, if it was saved to the stack, loading the saved link register value to a general-purpose register, and then using the Move To Special Purpose Register instruction to move the register containing the saved link-register value to the link register. (ii) An arithmetic shift left multiplies a signed binary number by 2. The competing computers in this market were the Librascope LGP-30 and the BendixG-15; both were drum memory machines. DMALGOL is ALGOL extended for compiling the DMSII database software from database description files created by the DASDL (Data Access and Structure Definition Language) compiler. Answer: A, 66 An interface that provides a method for transferring binary information between internal storage and external devices is called It has been listed by the computing scientist John Mashey as one of the architectures that he admires the most. (C) Flip Flop (D) Size of the stack. C) Both a and b D) internal wires In a program using subroutine call instruction, it is necessary______. C) bit addressable D) Tera byte addressable (C) Output interface Pressing it toggles this enable and turns its light on/off. (A) Absolute. Many of these operators are polymorphic depending on the kind of data being acted on as given by the tag. B5500, B6500, B6700, B6800, B6900, B7700 manuals at: Barton, Robert S. "A New Approach to the Functional Design of a Digital Computer" Proceedings of the Western Joint Computer Conference. In these examples, if N < 1 then the body of loop may execute once (with I having value 1) or not at all, depending on the programming language. Another facet of the B5000 architecture was that it was a secure architecture that runs directly on hardware. Answer: D, 31. [clarification needed] Languages then divide as to whether or not control structures have a final keyword. 02256 is the address of the location containing the address of the restart point of the Monitor program. (B) Immediate . The middle layer provides more domain dependent functions such as business logic and core processing services. a. internal b. external c. hardware d. software (D) None of these Resume execution. While B5000 was specifically designed to support ALGOL, this was only a starting point. Though this was its logical arrangement, physically memory was a 100x100 array of 12-bit ferrite core words, which causes a few quirks in the instruction set. The B5000 stack architecture inspired Chuck Moore, the designer of the programming language Forth, who encountered the B5500 while at MIT. Answer: B. The B5000 was the first stack-based system. Multiple instruction multiple data That such minimalism is possible does not mean that it is necessarily desirable; after all, computers theoretically need only one machine instruction (subtract one number from another and branch if the result is negative), but practical computers have dozens or even hundreds of machine instructions. In Forth - The Early Years, Moore described the influence, noting that Forth's DUP, DROP and SWAP came from the corresponding B5500 instructions (DUPL, DLET, EXCH). In his 2004 textbook, David Watt uses Tennent's notion of sequencer to explain the similarity between multi-level breaks and return statements. NEWP programs that contain unsafe constructs are initially non-executable. Like the async keyword, this supports programming in a "direct style". Answer: C, 156. A virtual machine is built upon an existing system and provides a virtual abstraction, a set of attributes, and operations. Dynamic RAM (RISC CPUs have many equivalent general-purpose registers so there's typically no hardware reason for giving them names other than numbers.). State True or False, 87 A byte is a group of 16 bits. Multitasking is also very efficient on the B5000 and B6500 lines. A. data transfer Answer: A, 72 A device/circuit that goes through a predefined sequence of states upon the application of input pulses is called (A) 93% Answers: (A) the branch address is assigned to a fixed location in memory. Conditional statements can be and often are nested inside other conditional statements. To compete effectively would require use of technologies that IBM had developed for larger computers, yet the machine would have to be produced at the least possible cost. (C) transistor. so it is very rare to find a procedure nested more than five levels deep, and it could be argued that such programs would be poorly structured. Answer: B, 18. (B) state diagram. Tag 5 words are descriptors, which are more fully described in the next section. d) none of the mentioned Instructions are used by the processorlet's take one look at the machine code that the instructions represent. C. it is volatile D. too bulky (B) generates the control signals to execute a microinstruction. These boards were inserted into sockets mounted in door-like racks which IBM referred to as gates. Even a program using a single programming language may use multiple calling conventions, either chosen by the compiler, for code optimization, or specified by the programmer. It includes parallel computing in which all the slaves can be executed in parallel. SIMD represents an organization that ______________. The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. (C) Occurs when a program accesses a page not currently in main memory. A. The BSA instruction is The data bits are bits 047 and the tag is in bits 4850. time. On faster machines past the B5000, more of the stack may be kept in registers or cache near the processor. Answer: C, 82 Which of the following are not a machine instructions Switch statements can allow compiler optimizations, such as lookup tables. A Stack-organised Computer uses instruction of Founded in the 1880s, Burroughs was the oldest continuously operating company in computing (Elliott Brothers was founded before Burroughs, but did not make computing devices in the 19th century). xxxxx is the address that you previously set the breakpoint at, you are now going to clear it. The 1802 represented the majority of COSMAC production, and today C. Important number D. Undefined Taking this one step further, a totally different program could call another program's code, creating a D[3] stack frame pointing to another process' D[2] environment on top of its own process stack. For example, saying that you want to handle 30 users per stack, in which case if you have 31 to 60 users, you have two stacks, 61 to 90 users, three stacks, etc. C. Flip Flop D. Decoder Easy to decompose the system based on hierarchy refinement. Level G; introduction of Interrupt option (needed for. e. execute instruction f. all of abve Logic circuit unit and a memory unit. Modified versions of the 1620 were used as the CPU of the IBM 1710 and IBM 1720 Industrial Process Control Systems (making it the first digital computer considered The instruction ORG O is a As well, there were four program switches on the console whose state a running program could test and so have its behavior directed by its user. Answer: D, 152. Define an interface for the sub-service identified in step 1. The amount of time required to read a block of data from a disk into memory is back2source | Designed By: Magic Mushroom, Developed By: Digipanda Consulting. Instead there was a button on the console called Modify which when pressed together with the Check Reset button, when the computer was in Manual mode, would set the computer in a mode that would clear all of memory in a tenth of one second regardless of how much memory you had; when you pressed Start. C. (11001)2 D. (01100)2 B) memory The EVENT data type did have some system overhead. Floating point representation is used to store (B) System mode A collection of lines that connects several devices is called .. These are synchronous processes. Later, the model 1311 disc storage device attached to the computer enabled a reduction in the fetch and carry of card decks or paper tape rolls, and a simple "Monitor" operating system could be loaded to help in selecting what to load from disc.[20][25].
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