The EL-501T calculator features:

• Two-line display 10+2 digits
• Key capabilities: > 146 built-in functions
• Power supply: Battery LR54 × 1
• Dimensions: 127 × 73 × 13 mm
• Weight: 68 g

Mathematical functions:

• 146 built-in functions, such as 1/x, x², √, %, π
• Complex numbers

Statistical functions:

• One-variable statistics
• Mean, standard deviation
• Combinations, permutations, factorials
• Random number generator

Notation and number of decimal places:

• SCI notation
• Thousand separator

Trigonometric functions:

• Angle units (DEG/RAD/GRAD)
• sin, cos, tan and inverse functions
• Hyperbolic functions
• Degree, minute, and second (DMS) calculation
• Conversion of Cartesian and polar coordinates

Number systems:

• Calculation in DEC, BIN, OCT, HEX, PEN