Topics: Isotope, Mass number, atomic number, Dual nature of matter, photoelectric effect, atomic spectrum, Rydberg equation

Topics: number system, binary number system, octal number system, hexadecimal number system, binary addition, binary subtraction, signed numbers, complement representation, binary multiplication, floating point representation, binary codes, binary coded decimal numbers, weighted codes, self implementing codes, cyclic codes, gray code, error detecting codes, error correcting code, Hamming code, BCD addition, alphanumeric codes, Boolean algebra, logic gates, duality principle, Venn diagram, truth table, Karnaugh map, Quine – McCluskey Method, combinational switching circuits, combinational circuits, half adder, full adder, parallel binary adder, 8421 adder, BCD adder, subtractor, multiplexers, demultiplexers, code converter, encoders, priority encoder, magnitude comparator, parity generator, parity checker, programmable logic devices, Field Programmable Logic Array, Programmable Array Logic, Programmable Read Only Memory, Direct Coupled Transistor Logic, Integrated Injection Logic, transistor transistor logic, CMOS Logic, Flip flop, shift registers, counter, Asynchronous Counters, counter ICs, Digital to Analog Converter, Analog to Digital Converter, digital memory, semiconductor memory, read only memory, random access memory, magnetic memory, magnetic bubble memories, charged coupled devices, compact disk read only memory

Topics: Complex numbers, Factorization of a complex numbers, Additive Inverse of a Complex Number, Conjugate of a complex number, Argand Plane, De Moivres Theorem

Topics: first-order login, logical seeing, number, number structures, points, lines, structure of real numbers, set theory, relations, structures, geometry, definable elements, definable constants, minimal structure, order-minimal structures, definable sets, complex numbers, first-order properties, symmetries, logical visibility

Topics: Positional Numbering Systems, Signed Integer Representation, Floating-Point Representation, Character Codes, error detection, error correction

Topics: complex numbers, Argand Diagram

Topics: complex number

Topics: Number System

Topics: Digital Logic Circuit Analysis, Digital Logic Circuit Design, computing, digital systems, number systems, positional notation, arithmetic, binary arithmetic, octal arithmetic, hexadecimal arithmetic, base conversions, signed number representation, computer codes, numeric codes, error detection codes, correction codes, Boolean algebra, Venn diagram, Duality, switching functions, truth tables, switching circuits, electronic logic gates, combinational circuits, algebraic methods, combinational logic circuits, computer aided design, design cycle, digital circuit modelling, design synthesis, logic simulation, Karnaugh maps, Quine-McCluskey tabular minimization method, Petrick's algorithm, computer aided minimization of switching functions. Modular combinational logic, Decodes, encoders, decoder circuit structures, encoders, multiplexers, demultiplexers, data distributors, adder circuits, comparators, semi custom logic devices, logic array circuits, field-programmable logic arrays, programmable read-only memory, programmable array logic, sequential devices, sequential circuits, memory devices, latches, flip-flops, timing circuits, modular sequential logic shift registers, counters, serial adder unit, serial accumulators, parallel accumulators, multiple-sequence counters, digital fractional rate multipliers, synchronous sequential circuit models, synchronous sequential circuits, registered programmable logic device, programmable gate arrays, sequential circuit design, logic circuit testing, digital logic circuit testing, combinational logic circuit testing, sequential logic circuit testing, electronic slot machine, keyless auto entry system

Topics: elements, compounds, atomic theory, chemical reaction, atom constituents, chemical symbols, chemical formulae, chemical reactions, chemical equations, electronic configuration, atomic number, mass numbers, nuclear atom, electronic, energy levels, Ion formations, nuclear reactions, radioactivity, nuclear radiations, nuclear fusion, nuclear fission, radioactivity hazards, chemical bonding, electrovalent bonding, Ionic bonding, electrovalent compounds, covalent bonding, covalent compounds, coordinate covalent bonding, dative covalent bonding, metallic bonding, intermolecular bonding, Van der Waal's forces, dipole-dipole attractions, hydrogen bonding, periodic table, periodic law, transition elements, atomic orbital model, principal quantum number, subsidiary quantum number, azimuthal quantum number, magnetic quantum number, spin quantum number, atomic orbital shape, atomic size, ionic radius, ionization energy, electron affinity, electronegativity, mole concept, melting, vaporization, boiling point, evaporation sublimation, heating graphs, cooling graphs, Boyle's law, Charles's law, Avogadro's law, boiling, solid classification, solid properties, molecular solid, metallic solid, Ionic solid, covalent solid, energy changes, heat content, heat of reaction, exothermic reactions, energy level diagrams, standard state, thermochemical equations, entropy, entropy change, free energy, chemical kinetic, rate of a chemical reaction, temperature, gas pressure, catalyst, activation, reaction rate, collision theory, Le Chatelier's principle, Haber process, contact process, salt hydrolysis, buffer solutions, common Ion effect, solubility product, Acid bases, salt, electrolysis, redox reactions, electrolytic conduction, oxidation, reduction, copper purification, electroplating, quantitative hydrolysis, metal corrosion, iron rusting, carbon, carbon allotropes, Diamond graphite, amorphous carbon, combustion reactions, industrial gas chemistry, metals, alloys, chemical industry, heavy chemicals, fine chemicals, fertilizers, plastics, soaps, detergents, pharmaceuticals, Nigerian chemical industry, aromatic compounds, Alicyclic compound, heterocyclic compound, homologous series, functional groups, isomerism, structural isomerism, geometric isomerism, IUPAC Nomenclature of organic compounds, purification methods, distillation, crystallization, chromatography, empirical formula, molecular formular, alkanes, natural gas, petroleum crude oil, benzene, fractional distillation petrol quality, cracking, isomerization, petrochemicals, alkanols, alkanoic acid, alkenoate, fat, oils, amino acid, polymer chemistry, polymerization processes, condensation polymerization, resins, natural polymers, carbohydrates, proteins, synthetic polymers, water pollution