Which type of computing system places the user in direct, conversational interaction with the computer (for example, via a keyboard and display) rather than delayed batch processing?

Introduction / Context:
This question distinguishes among system operation modes. Some systems accept jobs for later execution (batch), others deliver deterministic responses to time-critical events (real time), and others support live, conversational use. Knowing the differences aids in selecting the right platform for a given workload.

Given Data / Assumptions:

• The user interacts ‘‘in direct conversation’’ with the machine through a keyboard.
• Immediate feedback is implied.
• We must choose the system type that best matches conversational computing.

Concept / Approach:
Interactive systems enable rapid request–response exchanges, where a user issues commands and sees results instantly. Time-sharing is a related operating mode that allows multiple users to interact concurrently; however, the umbrella term signaling direct dialogue with a single user is ‘‘interactive computer.’’ Batch systems lack immediate interaction, and real-time systems focus on meeting strict timing constraints rather than user conversation.

Step-by-Step Solution:
Identify key phrase: ‘‘direct conversation’’ equals immediate human–computer interaction.Map system types: batch (delayed), real time (deadline-focused), time sharing (multiuser sharing but still interactive), and interactive (conversational by definition).Select the most direct match: ‘‘Interactive computer.’’

Verification / Alternative check:
Terminals connected to timesharing hosts are interactive; single-user OS shells are also interactive. The core attribute is the live dialogue, captured by the term interactive.

Why Other Options Are Wrong:

• Real time processing: Emphasizes guaranteed timing deadlines, not conversational use.
• Batch processing: Jobs run without ongoing user dialogue.
• Time sharing: Interactive but stresses multiuser resource sharing; the most literal match to the prompt is ‘‘Interactive computer.’’
• None of the above: Incorrect because an explicit correct choice exists.

Common Pitfalls:
Equating time-sharing with the generic term; while related, the question asks for the direct-conversation mode, which is best labeled as interactive.

Final Answer:
Interactive computer