(10)[ Where a deduction has been allowed to an assessee under this section in any assessment year, no deduction shall be allowed to the assessee under sub-section (1) of section 32-A in the said assessment year (hereinafter referred to as the initial assessment year) and a block of further period of four years beginning with the assessment year immediately succeeding the initial assessment year.Explanation. - In this section,-(a)"computers" does not include calculating machines and calculating devices;(b)"Development Bank" means-(i)in the case of an assessee carrying on business of growing and manufacturing tea in India, the National Bank for Agriculture and Rural Development established under section 3 of the National Bank for Agriculture and Rural Development Act, 1981 (61 of 1981);(ii)in the case of other assessees, the Industrial Development Bank of India established under the Industrial Development Bank of India Act, 1964 (18 of 1964) and includes such bank or institution as may be specified in the scheme in this behalf. ]