What type of adder is used to add two binary bits without carry bits?

A half-adder is the appropriate type of adder for adding two binary bits without considering carry bits. This circuit takes two single binary inputs and produces two outputs: the sum and the carry. The key characteristic of a half-adder is that it can only add two bits together, without any input coming from a previous carry.

When the inputs are both binary digits (0 or 1), the half-adder performs a simple addition. If both bits are 0, the sum is 0; if one of them is 1, the sum is 1; and if both are 1, the sum is 0 with a carry of 1. This design is limited to single-bit operations and does not account for further carry input, which makes it ideal for scenarios where only two bits need to be added.

In contrast, a full-adder is more complex as it is designed to handle the addition of three bits: two significant bits and an incoming carry. This distinguishes it from the half-adder, which solely focuses on two binary inputs. The other options, such as binary adder and digital adder, refer more broadly to systems and components that can add binary numbers but do not specifically define the basic operation of single