CMOS (Complementary Metal-Oxide-Semiconductor) technology has better I/A (input/output characteristics) compared to other options, such as bipolar, nMOS (n-channel Metal-Oxide-Semiconductor), and pMOS (p-channel Metal-Oxide-Semiconductor).

1. CMOS Technology:
CMOS is a widely used technology in modern integrated circuits (ICs) due to its low power consumption and high noise immunity. It consists of both nMOS and pMOS transistors, which are combined in a complementary manner to achieve superior I/A characteristics.

2. Bipolar Technology:
Bipolar technology, also known as BJT (Bipolar Junction Transistor), relies on the use of bipolar junction transistors. While BJTs offer high gain and fast switching speeds, they consume more power and have lower noise immunity compared to CMOS technology. This leads to less desirable I/A characteristics compared to CMOS.

3. nMOS Technology:
nMOS technology uses only n-type MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). It is commonly used in certain applications that require high speed, such as memory and digital circuits. However, nMOS technology has higher power consumption compared to CMOS and is more susceptible to noise, resulting in inferior I/A characteristics.

4. pMOS Technology:
pMOS technology employs only p-type MOSFETs. It is used in certain applications, such as analog circuits, where low power consumption is essential. However, pMOS technology suffers from slower switching speeds and lower noise immunity compared to CMOS, resulting in less favorable I/A characteristics.

Conclusion:
In summary, CMOS technology provides better I/A characteristics compared to bipolar, nMOS, and pMOS technologies. It combines the advantages of both nMOS and pMOS transistors, resulting in lower power consumption, faster switching speeds, and higher noise immunity. These features make CMOS technology the preferred choice for a wide range of applications, including digital and analog circuits in various electronic devices.