Disadvantages of Computerized Accounting: 

Reduction of Manpower: The introduction of computers in accounting work reduces the number of employees in an organization. Thus, it leads to greater amount of unemployment.
High Cost: A small firm cannot install a computer accounting system because of its high installation and maintenance cost. To be more economical there should be large volume of work. If the system is not used to its full capacity, then it would be highly uneconomical.
Require Special Skills: Computer system calls for highly specialized operators. The availability of such skilled personnel is very scarce and very costly.
Other Problems: Frequent repair and power failure may affect the accounting work very much. Computers are prone to viruses. Often time’s people will assume the computer is doing things correctly and problems will go unchecked for long period of time.   _{Your Comment}