Parallel In Serial Out Register

Duration: 4 min

This video lesson is available to enrolled students.

Return to /learn/ISRO/digital-electronics/sequential-circuits/shift-registers/asset-parallel-in-serial-out-register after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. General Aptitude & Reasoning: Number System, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Speed Time and Distance, Mixture and Alligation, Data Interpretation, Algebra, Probability, Permutation and Combination, Venn Diagram, HCF LCM, Divisibility Rules, Age Problems, Pipe and Cistern, Partnership, Linear Algebra, Sequence and Series (Series), Statistics, Powers and Exponents (Surds and Indices), Arithmetic, Mensuration and Geometry, Calculus, Trigonometry, Vectors, Speed Mathematics and Basic Mathematics, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analogy, Series (Number and Letter Series) (Numerical Relations and Reasoning), Puzzle Solving (Puzzles), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Calendar, Seating Arrangements, Coding Decoding, Blood Relations, Directions (Direction Test), Clock, Analytical Reasoning (Counting Figures Reasoning), Ranking, Order and Sequence, Logical Sequence Of Words, Inequality, Data Sufficiency, Cubes & Dices
  3. Computer Networks & Cybersecurity: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics, Network Security
  4. Programming, Data Structures & Algorithms: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, OOPS with C++, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  5. AI, Machine Learning, Big Data & Cloud: Emerging Tech Trends, Artificial Intelligence, Big Data Systems, Approaches to AI, Search Algorithms, Knowledge Representation, Cloud Computing
  6. Digital Logic & Computer Organization: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer
  7. TOC & Compiler: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory, Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  8. Discrete Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic
  9. Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS, Distributed Systems
  10. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, Object Oriented Technology, HTML Basics, JavaScript-Basics, Java, XML
  11. Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, Data Warehousing & Mining, Enhanced Data Models, NoSQL
  12. Other Recurring CS Topics: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, Multimedia
  13. Live Classes: ISRO Live classes
  14. Full Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comprehensive overview of the Parallel-In Serial-Out (PISO) shift register. The instructor begins by defining the PISO register as a circuit that accepts data simultaneously at each flip-flop (parallel input) and outputs it sequentially (serial output). He then meticulously draws and explains the logic circuit diagram, which utilizes four D flip-flops interconnected with AND and OR gates. The operation is governed by a 'Shift' control signal that toggles between parallel loading and serial shifting modes. Finally, the lecture concludes with a comparative analysis table, calculating the specific clock cycles required for data entry and retrieval in a PISO configuration compared to other shift register types.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces the topic with the on-screen title "Parallel-In Serial-Out Shift Register (PISO)" and a definition stating it allows parallel input and produces a serial output. He proceeds to draw a circuit diagram featuring four D flip-flops labeled Flip flop 1 through 4. He explains the input logic for each flip-flop, which consists of two AND gates feeding into an OR gate. One AND gate receives the parallel input data, while the other receives the output (Q) from the preceding flip-flop. He demonstrates that when the 'Shift' signal is low (0), the parallel input path is enabled, allowing data to be loaded simultaneously. He marks the shifting path gates with an 'X' to show they are disabled during this phase, ensuring the circuit operates in parallel load mode.

  2. 2:00 – 3:34 02:00-03:34

    The scene shifts to a table comparing SISO, SIPO, PISO, and PIPO registers. The instructor focuses on the PISO row to determine the timing requirements. He writes '1' in the "No of clock (write)" column, indicating that all parallel data is loaded in a single clock cycle. In the "No of clock (Read)" column, he writes 'n-1', signifying that n-1 clock pulses are needed to shift the data out serially. Consequently, he calculates the "total" clock cycles as 'n'. He verbally reinforces that this configuration is specifically used to convert parallel data to serial data, contrasting it with the SISO row which requires 2n-1 total cycles.

The lecture effectively bridges the gap between digital logic circuit design and performance analysis. It starts by establishing the physical architecture of a PISO register, detailing how multiplexer-like logic gates control data flow between parallel inputs and serial outputs based on a control signal. The lesson then transitions to a quantitative evaluation, using a comparison table to highlight the efficiency of PISO registers. By calculating that a PISO register requires only n total clock cycles (1 for write, n-1 for read), the instructor demonstrates its advantage over serial-in registers for applications requiring fast data loading followed by serial transmission.

Loading lesson…