//4 x 4 matrix keyboard with 8051 microcontroller in Telugu//, key press detection//diploma//ECE//

|| BCD (Binary Coded Decimal ) addition rules with examples in Telugu || Digital electronics | STLD|

| Binary and BCD Representation of decimal numbers 0 to 15 | in Telugu | Digital electronics| STLD |

|| Gray to Binary Conversion || in Telugu || digital electronics || STLD || diploma || Engineering |

| Subtraction using 1's complement and 2's complement with examples in Telugu | digital electronics

|| Methods of 1's Complement and 2's Complement || in Telugu || Digital Electronics || STLD || ECE |

| Binary Arithmetic Operations || addittion | subtraction || multiplication || division || in Telugu

|| Realize AND, OR, NOT operations using NOR gate || The NOR gate as a universal gate || in Telugu |

|| Realize (implementation) AND, OR, NOT operations using NAND gate || NAND gate as a universal gate

|| sin ^-x+sin^-y+sin^-z = π , then prove that x√1-x^2 + y√1-y^2 +z√1-z^2 = 2xyz || in Telugu | M1||

|| If cos^-p + cos^-q+ cos^-r = π, then prove that p^2 + q^2 + r^2 + 2pqr = 1 || in Telugu || M1 ||

| Prove that cos[Tan^-1 {sin (cot^-x)}] = √x^2+1/x^2+2 | in Telugu | Inverse trigonometric functions

|| Prove that sin^-1 3/5+sin^-1 8/17 = cos^-1 36/85 || in Telugu || M1 || Inter mathematics| diploma

|| Find the value of tan [ cos^-1 4/5+tan^-1 2/3] in Telugu || Inverse trigonometric functions || M1

|| Prove that sin inverse 4/5+Sin inverse 5/13+sin inverse 16/65 = π/2 || in Telugu |M1| inter maths

|| Instruction set of 8051 Microcontroller one mark question & answers || in Telugu || diploma ||

|| Prove that Tan inverse 3/4+Tan inverse 3/5-Tan inverse 8/19 = π/4 || in Telugu || M1 inter maths

| Prove that Tan inverse 1/2+Tan inverse 1/5+Tan inverse 1/8 = π/4 |in Telugu| Inverse trigonometry

|| Prove that sin inverse 4/5 + 2 tan inverse 1/3 = π/2 || in Telugu || engineering mathematics 1 ||

|| Obtain the delta equivalent circuit for the circuit shown in figure || Star to Delta conversion |

| If tan inverse of x+ tan inverse of y+tan inverse of z = π , then prove that x+y+z = xyz in Telugu

|| Obtain the star connection of three impedances equivalent to the network CDE shown in figure ||

||Prove that Sin [cot inverse 2x/1-x^2 + cos inverse [1-x^2/1+x^2]] = 1 ||in Telugu | diploma || M1|

|| Obtain the delta connected equivalent circuit for the given network || in Telugu || star to delta

| Show that sec^2[tan inverse 2] + cosec^2 [ cot inverse 2] = 0 || in Telugu | Inverse trigonometry|