1. An electronic calculator comprising: keyboard means including a plurality of operator keys and a plurality of operand keys for entering an algebraic statement into the calculator, said plurality of operator keys including an addition key, a subtraction key, a multiplication key, a division key, an exponentiation key, and a relational operator key for specifying add, subtract, multiply, divide, exponentiation, and relational operations respectively, together with selected operands, as part of an algebraic statement; memory means for storing algebraic statements entered into the calculator from said keyboard input means; processing means, coupled to said keyboard input means and memory means, for processing an algebraic statement entered into the calculator from said keyboard input means and stored in said memory means in accordance with the operations specified in the algebraic statement being processed; display means, coupled to said processing means, for visually displaying each algebraic statement as it is being entered from said keyboard input means; and output means, coupled to said processing means, for providing a visual indication of the results of an algebraic statement processed by said processing means; said processing means being operative during processing of an algebraic statement, for processing the operations specified in that algebraic statement in accordance with a predetermined hierarchal priority of operations, all relational operations being processed last, said processing means being further operative, during processing of an algebraic statement that specifies a plurality of operations having the same hierarchal priority, for processing that plurality of operations having the same hierarchal priority in the order in which they were specified during entry of that algebraic statement.