7 Segment Display Module TM1637
A useful data output for your Arduino project might be a simple 4-digit display. These displays make use of the TM1637 chip.
Keypad Membrane 4×3
This keypad has 12 buttons, arranged in a telephone-line 3×4 grid. It’s made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad.
Keypad Membrane 4×1₹50.00
LCD Display 20×4 Green
LCD (Liquid Crystal Display) screen is an electronic display module and find a wide range of applications. A 20×4 LCD display is very basic module and is very commonly used in various devices and circuits. These modules are preferred over seven segments and other multi segment LEDs. The reasons being: LCDs are economical; easily programmable; have no limitation of displaying special & even custom characters (unlike in seven segments), animations and so on.