VHDL Question & Answers July 25, 2022 By WatElectronics This article lists 75 VHDL MCQs for Engineering Students. The VHDL Questions & Answers below include solutions and links to the relevant topic. This is helpful for users who are preparing for their exams and interviews, or professionals who would like to brush up on the fundamentals of the VHDL. The signals, constants, variables, and files are the VHDL data objects. The data object signal is used to hold the list of values that includes current values and future values, so there is a requirement of defining a signal so the signal data object can be used directly while coding the program. If we want to store any value that is a constant value that will not change then with the use of a continuous VHDL data object we can assign any value to a variable, it will not change its value while simulation the program. The VHDL is one type of language used in digital circuits designs. The variable is one of the VHDL data objects, it holds any value while simulation a program then we can define the variables inside the program to get the final result directly. It will not change its value; it is just used to hold the value of a number that uses the variable. The structure of VHDL consists of package, entity, architecture, and configuration. The concurrent or dataflow, behavioral, and structural modeling are the styles of modeling in VHDL. The behavioral modeling statement consists of sequential program statements, the dataflow modeling statement consists of concurrent statements, and the structural modeling is a set of interconnecting components. Name Email 1). Which one of the following is a VHDL logical (Boolean) operator? Equality Inequality Less than Not None Hint 2). Which one of the following is a VHDL shift operator? SLA Not equal Equal None of the above None Hint 3). What is the use of VHDL language? Provides machine readable documentation Provides human readable documentation Both a and b None of the above None Hint 4). How many units does VHDL design consists? One Two Three Four None Hint 5). The simple index: integer: =0 is an example declaration of _______________ data type provided within VHDL? Integer Real Boolean Character None Hint 6). Which one of the following is a type of scalar literal? Character String Bit_vector Both b and c None Hint 7). In which one of the following, the user defined data types are allowed? VHDL Verilog Both a and b None of the above None Hint 8). In which one of the following, the modulo operator is present? VHDL Verilog Both a and b None of the above None Hint Read more about Digital Circuits 9). In which one of the following, the unary reduction operator is not present? Verilog VHDL Both a and b None of the above None Hint 10). Which one of the following is a VHDL relational operator? Not Equality NAND AND None Hint 11). What is the standard form of SLA? Shift Left Arithmetic Shift Line Arithmetic Side Left Arithmetic None of the above None Hint 12). Which one of the following, one manages the large design? VHDL Verilog Both a and b None of the above None Hint 13). Which one of the following supports multidimensional arrays? VHDL Verilog Both a and b None of the above None Hint 14). Which one of the following allows concurrent procedure calls? VHDL Verilog Both a and b None of the above None Hint 15). Which one of the following modelling statements consists of sequential program statement? Behavioural Dataflow Both a and b None of the above None Hint 16). Which one of the following modellings requires truth table for design? Structural Dataflow Behavioural None of the above None Hint 17). Which one of the following represents behaviour modelling? Structural Dataflow Behavioural Both b and c None Hint 18). Which one of the following modelling consists gate level abstraction? Structural Dataflow Behavioural Both b and c None Hint 19). The variable Val: real: =1.0 is an example declaration of ______ data type provided within VHDL? Integer Real Boolean Character None Hint 20). Which one of the following operators is a type of numerical operator? Not Addition NAND AND None Hint VHDL MCQs for Exams 21). What is the standard form of SLL? Shift Left Logical Shift Line Logical Side Left Logical None of the above None Hint 22). Which one of the following VHDL design unit used to define external view of a model? Entity Architecture Configuration None of the above None Hint 23). The concurrent signal assignments are categorized into ________ types? One Two Three Four None Hint 24). Which one of the following modelling statements consists of concurrent statements? Structural Dataflow Both a and b None of the above None Hint 25). Which one of the following modelling requires logical diagram for design? Structural Dataflow Behavioral None of the above None Hint 26). What is the abbreviation of std_ulogic? SU SUV SL SLV None Hint 27). The length of O "126" bit string is ______? Seven Nine Eight None of the above None Hint 28). Which one of the following types comes under fixed point type? String Ufixed Float Unsigned None Hint 29). Which one of the calls are used in the Verilog program? Procedure calls Task calls Both a and b None of the above None Hint 30). What is the standard form of SRL? Shift Right Logic Simple Right Logic Side Right Logic None of the above None Hint 31). The variable test: Boolean: =True is an example declaration of ________________ data type provided within VHDL? Integer Real Boolean Character None Hint 32). What is the abbreviation of std_ulogic_vector? SU SUV SL SLV None Hint 33). Which one of the following type comes under standard logic type? String Ufixed Float Std_logic None Hint 34). Which one of the calls are used in the VHDL program? Procedure calls Task calls Both a and b None of the above None Hint 35). Which of the following codes are simplified by using procedures? VHDL Verilog Both a and b None of the above None Hint 36). How many object types are there in very high speed integrated circut? One Two Three Four None Hint 37). How many modes are there for the ports in the VHDL language? One Two Three Four None Hint 38). Which one of the following object types require less memory? Signals Variables Both a and b None of the above None Hint 39). What is the name of the Lmask instruction? Logical mask Line mask Low mask None of the above None Hint 40). What is the standard form of SRA? Shift Right Arithmetic Simple Right Arithmetic Side Right Arithmetic None of the above None Hint 41). Which one of the following VHDL design unit is used to define the function of the model? Entity Architecture Configuration None of the above None Hint 42). The variable term: character: ='@' is a _____? Integer Real Boolean Character None Hint 43). Which one of the following is a type of array type literal? Character String Bit_vector Both b and c None Hint 44). In which one of the following, the user defined data types are not allowed? VHDL Verilog Both a and b None of the above None Hint 45). Which one of the following is a set of interconnect component? Structural Dataflow Behavioural None of the above None Hint 46). Which one of the following modelling requires Boolean expression for design? Structural Dataflow Both a and b None of the above None Hint 47). What is the abbreviation of Std_Logic? SU SUV SL SLV None Hint 48). The length of X "56" bit string is ______? Seven Nine Eight None of the above None Hint 49). Which of the following codes are simplified by using tasks? VHDL Verilog Both a and b None of the above None Hint 50). What is the standard form of VHSIC? Very High-Speed Circuit Very High-Speed Integrated Circuit Very High Shift Integrated Circuit None of the above None Hint VHDL MCQs for Students 51). Which one of the following VHDL design unit used to associate an architecture with an entity? Entity Architecture Configuration None of the above None Hint 52). The signal in 1: bit: ='0' is a _____? Integer Real Boolean Bit None Hint 53). What is the standard form of MVLS? Multi Valued Logic System Max Valued Logic System Min Valued Logic System None of the above None Hint 54). Which one of the following one doesn't manage the large design? VHDL Verilog Both a and b None of the above None Hint 55). What is the abbreviation of Std_Logic_Vector? Add description here! SU SUV SL SLV None Hint 56). What is the name of the LXOR instruction? Logical Exclusive OR Line External OR Low Exclusive OR None of the above None Hint 57). The shift operators in VHDL are categorized into ______ types? Two Four Six Eight None Hint 58). Which one of the following, one doesn't return any value? Functions Tasks Both a and b None of the above None Hint 59). What is the name of the instruction Divq? Division Divide quick Both a and b None of the above None Hint 60). What is the standard form of HDL? Hardware Describe Language Hardware Definition Language Hardware Description Language None of the above None Hint VHDL MCQs for Quiz 61). The variable delay: time: =25ns is an ________? Time Real Boolean Bit None Hint 62). Which one of the following one returns the value? Functions Tasks Both a and b None of the above None Hint 63). What is the name of the instruction Bi-ivnz? Branch quick Branch indexed Branch Branch indexed quick None Hint 64). The figure shown below is a block diagram of ____________________? Verilog VHDL HDL None of the above None Hint 65). What is the name of the instruction Br-ivnz? Branch quick Branch Branch indexed Branch indexed quick None Hint 66). Which one of the following called as glass box modelling? Behaviour model in Verilog Structural model in Verilog Both a and b None of the above None Hint 67). Which one of the following describes behaviour of the circuit within a process? Behavioral Structural Data flow None of the above None Hint 68). What is the name of the instruction Biq-ivnz? Branch quick Branch indexed Branch Branch indexed quick None Hint 69). What is the name of the LOR instruction? Line OR Logical OR Low OR None of the above None Hint 70). What is the standard form of RTL? Register Transport Level Reduced Transfer Level Register Transfer Level None of the above None Hint 71). What is the abbreviation of integer_vector? INT INTU INTV INTEGER None Hint 72). The length of B "1010110" bit string is ______? Seven Nine Eight None of the above None Hint 73). What is the name of the instruction Brq-ivnz? Branch quick Branch indexed Branch Branch indexed quick None Hint 74). Which one of the following called as black box modelling? Behaviour model in Verilog Structural model in VHDL Both a and b None of the above None Hint 75). Which one of the following describes how data flows from input to output? Behavioural Structural Data flow None of the above None Hint For More MCQs VLSI Design Technology Question & Answers Please fill in the comment box below. Time's up
