[INFORMATION SYSTEMS INDEX]

	EL-520L.
	Calculation with solar energy.

The EL-520L is designed for all-round energy-saving operation. It saves the energy of the student with its ease of operation. And it saves battery power by using solar energy. With 192 scientific functions, it easily solves all problems for senior pupils. The results are easy to read from the two-line display. And if you do occasionally make an incorrect entry, then this is indicated by the 3 error messages.

Specifications
Two-line display
Direct algebraic input logic
193 scientific functions
12-digit alphanumeric display
10+2-digit numeric display
Formula recall
Formula correction
Replacement of constants
7 constants memory
Result memory
Fractions
Calculation in sexagesimal system (Hours/mins/secs
Conversions:
- DEG - RAD - GRAD(Gon)
- DEG - DMS
- POL - REC
- HEX - BIN - DEC - OCT
Boolean operations: NOT, AND, OR, XOR, XNOR, NEG,
Calculation in HEX, BIN, DEC, OCT
Bidimensional statistics
Linear regression
Correlation coefficient
Combination/permutation
Random numbers
3 error messages
Display of a syntax error position
Calculator protection with rigid plastic sliding cover