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Digital Electronics

Number Systems

Binary Number System Octal Number System Hexadecimal Number System Number System Conversions Binary Addition Binary Subtraction 1s Complement 2s Complement Signed Number Representation BCD Code Gray Code Excess-3 Code ASCII Code Error Detection Codes Hamming Code

Logic Gates

AND Gate OR Gate NOT Gate NAND Gate NOR Gate XOR Gate XNOR Gate Universal Gates NAND Universal Gates NOR Multi-Input Gates Buffer Gate TTL Logic Family CMOS Logic Family TTL vs CMOS Comparison Logic Level Interfacing

Boolean Algebra

Boolean Algebra Axioms Boolean Algebra Theorems De Morgan Theorem 1 De Morgan Theorem 2 De Morgan Applications Boolean Expression Simplification Canonical SOP Form Canonical POS Form Minterm and Maxterm Relationship K-Map 2 Variable K-Map 3 Variable K-Map 4 Variable K-Map Don't Care Conditions K-Map POS Simplification Quine-McCluskey Method Prime Implicant Chart

Combinational Circuits

Sequential Circuits

Memory & PLDs

ROM Architecture PROM EPROM and EEPROM SRAM DRAM SRAM vs DRAM Flash Memory PLA PAL CPLD FPGA Architecture FPGA vs ASIC

Digital System Design

Propagation Delay Setup and Hold Time Static Hazards Dynamic Hazards Glitches and Races Synchronous Design Principles Clock Skew and Jitter Asynchronous Circuit Design

Other Topics

Other Subjects

Analog Electronics Signals & Systems Control Systems Electromagnetic Theory Digital Communication Analog Communication Network Analysis Microprocessors VLSI Design Verilog HDL Power Electronics Embedded Systems DSP Electronic Devices

Section Progress74%

20 of 27 articles

Universal Shift Register

Bidirectional, all four modes, IC 74194.

Updated: 19 March 2026

11 min read

Universal Register Quiz

Test your knowledge of IC 74194 modes, control lines, and bidirectional operation.

Question 1 of 3

Q1.In the IC 74194 universal shift register, the mode control inputs S1S0 = 01 select which operation?

Related Articles

SISO Shift Register

Serial in serial out, data shifting, delay line.

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SIPO Shift Register

Serial in parallel out, serial to parallel conversion.

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PISO Shift Register

Parallel in serial out, parallel to serial conversion.

12 min read

Modeling Shift Registers

SISO, SIPO, PISO, PIPO.

8 min read

Ring Counter

Circular shift register, one-hot state encoding.

12 min read

PIPO Shift Register

Shift Register Applications